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Finding the Fourth Proportional to 478,708.57, 718,081.08 and 179,157.61

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Solution

The fourth proportional to 478,708.57, 718,081.08 and 179,157.61 is: 268,743.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,708.57 : 718,081.08 = 179,157.61 : x
  2. Step 2: Convert to fraction form
    478,708.57/718,081.08 = 179,157.61/x
  3. Step 3: Cross multiply
    478,708.57x = 718,081.08 × 179,157.61
  4. Step 4: Simplify right side
    478,708.57x = 128,649,690,079.02
  5. Step 5: Solve for x
    x = 128,649,690,079.02/478,708.57
  6. Step 6: Final answer
    x = 268,743.24

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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.