Home / 426,103.38-639,130-159,841.60

Finding the Fourth Proportional to 426,103.38, 639,130 and 159,841.60

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Solution

The fourth proportional to 426,103.38, 639,130 and 159,841.60 is: 239,753.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,103.38 : 639,130 = 159,841.60 : x
  2. Step 2: Convert to fraction form
    426,103.38/639,130 = 159,841.60/x
  3. Step 3: Cross multiply
    426,103.38x = 639,130 × 159,841.60
  4. Step 4: Simplify right side
    426,103.38x = 102,159,561,808
  5. Step 5: Solve for x
    x = 102,159,561,808/426,103.38
  6. Step 6: Final answer
    x = 239,753.00

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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.