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Finding the Fourth Proportional to 498,806.60, 748,064.10 and 178,921.40

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Solution

The fourth proportional to 498,806.60, 748,064.10 and 178,921.40 is: 268,329.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,806.60 : 748,064.10 = 178,921.40 : x
  2. Step 2: Convert to fraction form
    498,806.60/748,064.10 = 178,921.40/x
  3. Step 3: Cross multiply
    498,806.60x = 748,064.10 × 178,921.40
  4. Step 4: Simplify right side
    498,806.60x = 133,844,676,061.74
  5. Step 5: Solve for x
    x = 133,844,676,061.74/498,806.60
  6. Step 6: Final answer
    x = 268,329.80

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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.