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Finding the Fourth Proportional to 482,702.98, 724,171.45 and 145,723.47

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Solution

The fourth proportional to 482,702.98, 724,171.45 and 145,723.47 is: 218,620.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,702.98 : 724,171.45 = 145,723.47 : x
  2. Step 2: Convert to fraction form
    482,702.98/724,171.45 = 145,723.47/x
  3. Step 3: Cross multiply
    482,702.98x = 724,171.45 × 145,723.47
  4. Step 4: Simplify right side
    482,702.98x = 105,528,776,568.93
  5. Step 5: Solve for x
    x = 105,528,776,568.93/482,702.98
  6. Step 6: Final answer
    x = 218,620.52

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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.