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Finding the Fourth Proportional to 475,718.40, 712,972.80 and 194,918.40

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Solution

The fourth proportional to 475,718.40, 712,972.80 and 194,918.40 is: 292,129.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,718.40 : 712,972.80 = 194,918.40 : x
  2. Step 2: Convert to fraction form
    475,718.40/712,972.80 = 194,918.40/x
  3. Step 3: Cross multiply
    475,718.40x = 712,972.80 × 194,918.40
  4. Step 4: Simplify right side
    475,718.40x = 138,971,517,419.52
  5. Step 5: Solve for x
    x = 138,971,517,419.52/475,718.40
  6. Step 6: Final answer
    x = 292,129.79

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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.