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Finding the Fourth Proportional to 508,724.64, 763,103.21 and 255,867.12

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Solution

The fourth proportional to 508,724.64, 763,103.21 and 255,867.12 is: 383,808.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,724.64 : 763,103.21 = 255,867.12 : x
  2. Step 2: Convert to fraction form
    508,724.64/763,103.21 = 255,867.12/x
  3. Step 3: Cross multiply
    508,724.64x = 763,103.21 × 255,867.12
  4. Step 4: Simplify right side
    508,724.64x = 195,253,019,326.12
  5. Step 5: Solve for x
    x = 195,253,019,326.12/508,724.64
  6. Step 6: Final answer
    x = 383,808.85

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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.