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Finding the Fourth Proportional to 320,439.60, 480,691.98 and 110,050.20

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Solution

The fourth proportional to 320,439.60, 480,691.98 and 110,050.20 is: 165,086.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,439.60 : 480,691.98 = 110,050.20 : x
  2. Step 2: Convert to fraction form
    320,439.60/480,691.98 = 110,050.20/x
  3. Step 3: Cross multiply
    320,439.60x = 480,691.98 × 110,050.20
  4. Step 4: Simplify right side
    320,439.60x = 52,900,248,537.40
  5. Step 5: Solve for x
    x = 52,900,248,537.40/320,439.60
  6. Step 6: Final answer
    x = 165,086.49

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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.