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Finding the Fourth Proportional to 482,689.70, 724,069.17 and 127,699.50

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Solution

The fourth proportional to 482,689.70, 724,069.17 and 127,699.50 is: 191,558.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,689.70 : 724,069.17 = 127,699.50 : x
  2. Step 2: Convert to fraction form
    482,689.70/724,069.17 = 127,699.50/x
  3. Step 3: Cross multiply
    482,689.70x = 724,069.17 × 127,699.50
  4. Step 4: Simplify right side
    482,689.70x = 92,463,270,974.42
  5. Step 5: Solve for x
    x = 92,463,270,974.42/482,689.70
  6. Step 6: Final answer
    x = 191,558.41

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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.