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Finding the Fourth Proportional to 315,747.20, 473,609.88 and 79,091.92

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Solution

The fourth proportional to 315,747.20, 473,609.88 and 79,091.92 is: 118,635.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,747.20 : 473,609.88 = 79,091.92 : x
  2. Step 2: Convert to fraction form
    315,747.20/473,609.88 = 79,091.92/x
  3. Step 3: Cross multiply
    315,747.20x = 473,609.88 × 79,091.92
  4. Step 4: Simplify right side
    315,747.20x = 37,458,714,740.17
  5. Step 5: Solve for x
    x = 37,458,714,740.17/315,747.20
  6. Step 6: Final answer
    x = 118,635.14

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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.