Home / 426,000.20-638,757.30-159,769.40

Finding the Fourth Proportional to 426,000.20, 638,757.30 and 159,769.40

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Solution

The fourth proportional to 426,000.20, 638,757.30 and 159,769.40 is: 239,562.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,000.20 : 638,757.30 = 159,769.40 : x
  2. Step 2: Convert to fraction form
    426,000.20/638,757.30 = 159,769.40/x
  3. Step 3: Cross multiply
    426,000.20x = 638,757.30 × 159,769.40
  4. Step 4: Simplify right side
    426,000.20x = 102,053,870,566.62
  5. Step 5: Solve for x
    x = 102,053,870,566.62/426,000.20
  6. Step 6: Final answer
    x = 239,562.96

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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.