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Finding the Fourth Proportional to 486,940.59, 730,489.37 and 149,981.13

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Solution

The fourth proportional to 486,940.59, 730,489.37 and 149,981.13 is: 224,995.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,940.59 : 730,489.37 = 149,981.13 : x
  2. Step 2: Convert to fraction form
    486,940.59/730,489.37 = 149,981.13/x
  3. Step 3: Cross multiply
    486,940.59x = 730,489.37 × 149,981.13
  4. Step 4: Simplify right side
    486,940.59x = 109,559,620,415.68
  5. Step 5: Solve for x
    x = 109,559,620,415.68/486,940.59
  6. Step 6: Final answer
    x = 224,995.87

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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.