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Finding the Fourth Proportional to 487,280.46, 731,024.99 and 145,750.68

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Solution

The fourth proportional to 487,280.46, 731,024.99 and 145,750.68 is: 218,657.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,280.46 : 731,024.99 = 145,750.68 : x
  2. Step 2: Convert to fraction form
    487,280.46/731,024.99 = 145,750.68/x
  3. Step 3: Cross multiply
    487,280.46x = 731,024.99 × 145,750.68
  4. Step 4: Simplify right side
    487,280.46x = 106,547,388,660.74
  5. Step 5: Solve for x
    x = 106,547,388,660.74/487,280.46
  6. Step 6: Final answer
    x = 218,657.22

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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.