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Finding the Fourth Proportional to 482,948.80, 724,390.80 and 127,955.20

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Solution

The fourth proportional to 482,948.80, 724,390.80 and 127,955.20 is: 191,924.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,948.80 : 724,390.80 = 127,955.20 : x
  2. Step 2: Convert to fraction form
    482,948.80/724,390.80 = 127,955.20/x
  3. Step 3: Cross multiply
    482,948.80x = 724,390.80 × 127,955.20
  4. Step 4: Simplify right side
    482,948.80x = 92,689,569,692.16
  5. Step 5: Solve for x
    x = 92,689,569,692.16/482,948.80
  6. Step 6: Final answer
    x = 191,924.22

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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.