Home / 385,215,090,322.76-531,598,066,812.35-213,937,021,812.30

Finding the Fourth Proportional to 385,215,090,322.76, 531,598,066,812.35 and 213,937,021,812.30

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Solution

The fourth proportional to 385,215,090,322.76, 531,598,066,812.35 and 213,937,021,812.30 is: 295,233,779,963.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,215,090,322.76 : 531,598,066,812.35 = 213,937,021,812.30 : x
  2. Step 2: Convert to fraction form
    385,215,090,322.76/531,598,066,812.35 = 213,937,021,812.30/x
  3. Step 3: Cross multiply
    385,215,090,322.76x = 531,598,066,812.35 × 213,937,021,812.30
  4. Step 4: Simplify right side
    385,215,090,322.76x = 113,728,507,215,010,221,522,944
  5. Step 5: Solve for x
    x = 113,728,507,215,010,221,522,944/385,215,090,322.76
  6. Step 6: Final answer
    x = 295,233,779,963.61

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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.