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Finding the Fourth Proportional to 631,160.78, 871,008.80 and 344,689.29

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Solution

The fourth proportional to 631,160.78, 871,008.80 and 344,689.29 is: 475,675.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,160.78 : 871,008.80 = 344,689.29 : x
  2. Step 2: Convert to fraction form
    631,160.78/871,008.80 = 344,689.29/x
  3. Step 3: Cross multiply
    631,160.78x = 871,008.80 × 344,689.29
  4. Step 4: Simplify right side
    631,160.78x = 300,227,403,132.31
  5. Step 5: Solve for x
    x = 300,227,403,132.31/631,160.78
  6. Step 6: Final answer
    x = 475,675.00

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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.