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Finding the Fourth Proportional to 482,685.35, 724,145.08 and 145,705.87

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Solution

The fourth proportional to 482,685.35, 724,145.08 and 145,705.87 is: 218,594.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,685.35 : 724,145.08 = 145,705.87 : x
  2. Step 2: Convert to fraction form
    482,685.35/724,145.08 = 145,705.87/x
  3. Step 3: Cross multiply
    482,685.35x = 724,145.08 × 145,705.87
  4. Step 4: Simplify right side
    482,685.35x = 105,512,186,712.99
  5. Step 5: Solve for x
    x = 105,512,186,712.99/482,685.35
  6. Step 6: Final answer
    x = 218,594.14

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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.