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Finding the Fourth Proportional to 632,142.72, 948,214.99 and 258,165.72

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Solution

The fourth proportional to 632,142.72, 948,214.99 and 258,165.72 is: 387,248.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,142.72 : 948,214.99 = 258,165.72 : x
  2. Step 2: Convert to fraction form
    632,142.72/948,214.99 = 258,165.72/x
  3. Step 3: Cross multiply
    632,142.72x = 948,214.99 × 258,165.72
  4. Step 4: Simplify right side
    632,142.72x = 244,796,605,608.14
  5. Step 5: Solve for x
    x = 244,796,605,608.14/632,142.72
  6. Step 6: Final answer
    x = 387,248.95

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Double scale
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Similar ratio
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1.5x scale

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.