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Finding the Fourth Proportional to 325,710.30, 488,565.45 and 115,320.90

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Solution

The fourth proportional to 325,710.30, 488,565.45 and 115,320.90 is: 172,981.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,710.30 : 488,565.45 = 115,320.90 : x
  2. Step 2: Convert to fraction form
    325,710.30/488,565.45 = 115,320.90/x
  3. Step 3: Cross multiply
    325,710.30x = 488,565.45 × 115,320.90
  4. Step 4: Simplify right side
    325,710.30x = 56,341,807,402.91
  5. Step 5: Solve for x
    x = 56,341,807,402.91/325,710.30
  6. Step 6: Final answer
    x = 172,981.35

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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.