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Finding the Fourth Proportional to 360,387.72, 497,252.38 and 215,165.20

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Solution

The fourth proportional to 360,387.72, 497,252.38 and 215,165.20 is: 296,878.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,387.72 : 497,252.38 = 215,165.20 : x
  2. Step 2: Convert to fraction form
    360,387.72/497,252.38 = 215,165.20/x
  3. Step 3: Cross multiply
    360,387.72x = 497,252.38 × 215,165.20
  4. Step 4: Simplify right side
    360,387.72x = 106,991,407,793.18
  5. Step 5: Solve for x
    x = 106,991,407,793.18/360,387.72
  6. Step 6: Final answer
    x = 296,878.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.