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Finding the Fourth Proportional to 482,890.80, 724,332.60 and 145,930.80

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Solution

The fourth proportional to 482,890.80, 724,332.60 and 145,930.80 is: 218,895.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,890.80 : 724,332.60 = 145,930.80 : x
  2. Step 2: Convert to fraction form
    482,890.80/724,332.60 = 145,930.80/x
  3. Step 3: Cross multiply
    482,890.80x = 724,332.60 × 145,930.80
  4. Step 4: Simplify right side
    482,890.80x = 105,702,435,784.08
  5. Step 5: Solve for x
    x = 105,702,435,784.08/482,890.80
  6. Step 6: Final answer
    x = 218,895.11

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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.