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Finding the Fourth Proportional to 631,376.30, 871,266.80 and 344,841.03

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Solution

The fourth proportional to 631,376.30, 871,266.80 and 344,841.03 is: 475,862.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,376.30 : 871,266.80 = 344,841.03 : x
  2. Step 2: Convert to fraction form
    631,376.30/871,266.80 = 344,841.03/x
  3. Step 3: Cross multiply
    631,376.30x = 871,266.80 × 344,841.03
  4. Step 4: Simplify right side
    631,376.30x = 300,448,541,578.91
  5. Step 5: Solve for x
    x = 300,448,541,578.91/631,376.30
  6. Step 6: Final answer
    x = 475,862.87

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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.