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Finding the Fourth Proportional to 482,931.80, 724,365.30 and 127,938.20

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Solution

The fourth proportional to 482,931.80, 724,365.30 and 127,938.20 is: 191,898.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,931.80 : 724,365.30 = 127,938.20 : x
  2. Step 2: Convert to fraction form
    482,931.80/724,365.30 = 127,938.20/x
  3. Step 3: Cross multiply
    482,931.80x = 724,365.30 × 127,938.20
  4. Step 4: Simplify right side
    482,931.80x = 92,673,992,624.46
  5. Step 5: Solve for x
    x = 92,673,992,624.46/482,931.80
  6. Step 6: Final answer
    x = 191,898.72

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