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Finding the Fourth Proportional to 381,468.15, 572,202.23 and 115,200.90

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Solution

The fourth proportional to 381,468.15, 572,202.23 and 115,200.90 is: 172,801.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,468.15 : 572,202.23 = 115,200.90 : x
  2. Step 2: Convert to fraction form
    381,468.15/572,202.23 = 115,200.90/x
  3. Step 3: Cross multiply
    381,468.15x = 572,202.23 × 115,200.90
  4. Step 4: Simplify right side
    381,468.15x = 65,918,211,302.00
  5. Step 5: Solve for x
    x = 65,918,211,302.00/381,468.15
  6. Step 6: Final answer
    x = 172,801.35

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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.