Home / 385,215,090,322.02-531,598,066,811.32-213,937,021,811.54

Finding the Fourth Proportional to 385,215,090,322.02, 531,598,066,811.32 and 213,937,021,811.54

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Solution

The fourth proportional to 385,215,090,322.02, 531,598,066,811.32 and 213,937,021,811.54 is: 295,233,779,962.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,215,090,322.02 : 531,598,066,811.32 = 213,937,021,811.54 : x
  2. Step 2: Convert to fraction form
    385,215,090,322.02/531,598,066,811.32 = 213,937,021,811.54/x
  3. Step 3: Cross multiply
    385,215,090,322.02x = 531,598,066,811.32 × 213,937,021,811.54
  4. Step 4: Simplify right side
    385,215,090,322.02x = 113,728,507,214,385,874,206,720
  5. Step 5: Solve for x
    x = 113,728,507,214,385,874,206,720/385,215,090,322.02
  6. Step 6: Final answer
    x = 295,233,779,962.55

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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.