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Finding the Fourth Proportional to 426,117.70, 639,176.55 and 159,886.90

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Solution

The fourth proportional to 426,117.70, 639,176.55 and 159,886.90 is: 239,830.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,117.70 : 639,176.55 = 159,886.90 : x
  2. Step 2: Convert to fraction form
    426,117.70/639,176.55 = 159,886.90/x
  3. Step 3: Cross multiply
    426,117.70x = 639,176.55 × 159,886.90
  4. Step 4: Simplify right side
    426,117.70x = 102,195,957,132.20
  5. Step 5: Solve for x
    x = 102,195,957,132.20/426,117.70
  6. Step 6: Final answer
    x = 239,830.35

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Similar ratio
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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.