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Finding the Fourth Proportional to 426,159.80, 639,073.44 and 159,774.92

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Solution

The fourth proportional to 426,159.80, 639,073.44 and 159,774.92 is: 239,600.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,159.80 : 639,073.44 = 159,774.92 : x
  2. Step 2: Convert to fraction form
    426,159.80/639,073.44 = 159,774.92/x
  3. Step 3: Cross multiply
    426,159.80x = 639,073.44 × 159,774.92
  4. Step 4: Simplify right side
    426,159.80x = 102,107,907,750.13
  5. Step 5: Solve for x
    x = 102,107,907,750.13/426,159.80
  6. Step 6: Final answer
    x = 239,600.05

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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.