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Finding the Fourth Proportional to 426,133.71, 639,034.45 and 159,748.88

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Solution

The fourth proportional to 426,133.71, 639,034.45 and 159,748.88 is: 239,561.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,133.71 : 639,034.45 = 159,748.88 : x
  2. Step 2: Convert to fraction form
    426,133.71/639,034.45 = 159,748.88/x
  3. Step 3: Cross multiply
    426,133.71x = 639,034.45 × 159,748.88
  4. Step 4: Simplify right side
    426,133.71x = 102,085,034,074.37
  5. Step 5: Solve for x
    x = 102,085,034,074.37/426,133.71
  6. Step 6: Final answer
    x = 239,561.04

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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.