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Finding the Fourth Proportional to 486,474.49, 730,043.91 and 170,931.43

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Solution

The fourth proportional to 486,474.49, 730,043.91 and 170,931.43 is: 256,513.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,474.49 : 730,043.91 = 170,931.43 : x
  2. Step 2: Convert to fraction form
    486,474.49/730,043.91 = 170,931.43/x
  3. Step 3: Cross multiply
    486,474.49x = 730,043.91 × 170,931.43
  4. Step 4: Simplify right side
    486,474.49x = 124,787,449,499.09
  5. Step 5: Solve for x
    x = 124,787,449,499.09/486,474.49
  6. Step 6: Final answer
    x = 256,513.86

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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.