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Finding the Fourth Proportional to 478,359.27, 660,079.13 and 271,613.66

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Solution

The fourth proportional to 478,359.27, 660,079.13 and 271,613.66 is: 374,794.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,359.27 : 660,079.13 = 271,613.66 : x
  2. Step 2: Convert to fraction form
    478,359.27/660,079.13 = 271,613.66/x
  3. Step 3: Cross multiply
    478,359.27x = 660,079.13 × 271,613.66
  4. Step 4: Simplify right side
    478,359.27x = 179,286,503,730.45
  5. Step 5: Solve for x
    x = 179,286,503,730.45/478,359.27
  6. Step 6: Final answer
    x = 374,794.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.