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Finding the Fourth Proportional to 508,956.28, 763,433.94 and 129,877.02

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Solution

The fourth proportional to 508,956.28, 763,433.94 and 129,877.02 is: 194,815.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,956.28 : 763,433.94 = 129,877.02 : x
  2. Step 2: Convert to fraction form
    508,956.28/763,433.94 = 129,877.02/x
  3. Step 3: Cross multiply
    508,956.28x = 763,433.94 × 129,877.02
  4. Step 4: Simplify right side
    508,956.28x = 99,152,522,566.60
  5. Step 5: Solve for x
    x = 99,152,522,566.60/508,956.28
  6. Step 6: Final answer
    x = 194,815.40

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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.