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Finding the Fourth Proportional to 315,103.80, 472,655.70 and 93,487.80

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Solution

The fourth proportional to 315,103.80, 472,655.70 and 93,487.80 is: 140,231.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,103.80 : 472,655.70 = 93,487.80 : x
  2. Step 2: Convert to fraction form
    315,103.80/472,655.70 = 93,487.80/x
  3. Step 3: Cross multiply
    315,103.80x = 472,655.70 × 93,487.80
  4. Step 4: Simplify right side
    315,103.80x = 44,187,541,550.46
  5. Step 5: Solve for x
    x = 44,187,541,550.46/315,103.80
  6. Step 6: Final answer
    x = 140,231.70

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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.