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Finding the Fourth Proportional to 627,713.28, 941,561.80 and 154,402.74

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Solution

The fourth proportional to 627,713.28, 941,561.80 and 154,402.74 is: 231,602.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,713.28 : 941,561.80 = 154,402.74 : x
  2. Step 2: Convert to fraction form
    627,713.28/941,561.80 = 154,402.74/x
  3. Step 3: Cross multiply
    627,713.28x = 941,561.80 × 154,402.74
  4. Step 4: Simplify right side
    627,713.28x = 145,379,721,799.33
  5. Step 5: Solve for x
    x = 145,379,721,799.33/627,713.28
  6. Step 6: Final answer
    x = 231,602.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.