Home / 385,215,090,326.51-531,598,066,817.54-213,937,021,816.05

Finding the Fourth Proportional to 385,215,090,326.51, 531,598,066,817.54 and 213,937,021,816.05

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Solution

The fourth proportional to 385,215,090,326.51, 531,598,066,817.54 and 213,937,021,816.05 is: 295,233,779,968.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,215,090,326.51 : 531,598,066,817.54 = 213,937,021,816.05 : x
  2. Step 2: Convert to fraction form
    385,215,090,326.51/531,598,066,817.54 = 213,937,021,816.05/x
  3. Step 3: Cross multiply
    385,215,090,326.51x = 531,598,066,817.54 × 213,937,021,816.05
  4. Step 4: Simplify right side
    385,215,090,326.51x = 113,728,507,218,114,056,814,592
  5. Step 5: Solve for x
    x = 113,728,507,218,114,056,814,592/385,215,090,326.51
  6. Step 6: Final answer
    x = 295,233,779,968.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.