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Finding the Fourth Proportional to 482,685.60, 724,145.45 and 145,706.12

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Solution

The fourth proportional to 482,685.60, 724,145.45 and 145,706.12 is: 218,594.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,685.60 : 724,145.45 = 145,706.12 : x
  2. Step 2: Convert to fraction form
    482,685.60/724,145.45 = 145,706.12/x
  3. Step 3: Cross multiply
    482,685.60x = 724,145.45 × 145,706.12
  4. Step 4: Simplify right side
    482,685.60x = 105,512,423,835.15
  5. Step 5: Solve for x
    x = 105,512,423,835.15/482,685.60
  6. Step 6: Final answer
    x = 218,594.51

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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.