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Finding the Fourth Proportional to 387,675, 581,512.50 and 103,366.52

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Solution

The fourth proportional to 387,675, 581,512.50 and 103,366.52 is: 155,049.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,675 : 581,512.50 = 103,366.52 : x
  2. Step 2: Convert to fraction form
    387,675/581,512.50 = 103,366.52/x
  3. Step 3: Cross multiply
    387,675x = 581,512.50 × 103,366.52
  4. Step 4: Simplify right side
    387,675x = 60,108,923,461.50
  5. Step 5: Solve for x
    x = 60,108,923,461.50/387,675
  6. Step 6: Final answer
    x = 155,049.78

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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.