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Finding the Fourth Proportional to 261,609.60, 392,414.40 and 243,894.90

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Solution

The fourth proportional to 261,609.60, 392,414.40 and 243,894.90 is: 365,842.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,609.60 : 392,414.40 = 243,894.90 : x
  2. Step 2: Convert to fraction form
    261,609.60/392,414.40 = 243,894.90/x
  3. Step 3: Cross multiply
    261,609.60x = 392,414.40 × 243,894.90
  4. Step 4: Simplify right side
    261,609.60x = 95,707,870,846.56
  5. Step 5: Solve for x
    x = 95,707,870,846.56/261,609.60
  6. Step 6: Final answer
    x = 365,842.35

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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.