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Finding the Fourth Proportional to 320,502.80, 480,832.92 and 110,143.76

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Solution

The fourth proportional to 320,502.80, 480,832.92 and 110,143.76 is: 165,242.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,502.80 : 480,832.92 = 110,143.76 : x
  2. Step 2: Convert to fraction form
    320,502.80/480,832.92 = 110,143.76/x
  3. Step 3: Cross multiply
    320,502.80x = 480,832.92 × 110,143.76
  4. Step 4: Simplify right side
    320,502.80x = 52,960,745,740.58
  5. Step 5: Solve for x
    x = 52,960,745,740.58/320,502.80
  6. Step 6: Final answer
    x = 165,242.69

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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.