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Finding the Fourth Proportional to 486,687.72, 730,031.66 and 183,139.02

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Solution

The fourth proportional to 486,687.72, 730,031.66 and 183,139.02 is: 274,708.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,687.72 : 730,031.66 = 183,139.02 : x
  2. Step 2: Convert to fraction form
    486,687.72/730,031.66 = 183,139.02/x
  3. Step 3: Cross multiply
    486,687.72x = 730,031.66 × 183,139.02
  4. Step 4: Simplify right side
    486,687.72x = 133,697,282,781.37
  5. Step 5: Solve for x
    x = 133,697,282,781.37/486,687.72
  6. Step 6: Final answer
    x = 274,708.56

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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.