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Finding the Fourth Proportional to 426,137.59, 639,040.26 and 159,752.75

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Solution

The fourth proportional to 426,137.59, 639,040.26 and 159,752.75 is: 239,566.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,137.59 : 639,040.26 = 159,752.75 : x
  2. Step 2: Convert to fraction form
    426,137.59/639,040.26 = 159,752.75/x
  3. Step 3: Cross multiply
    426,137.59x = 639,040.26 × 159,752.75
  4. Step 4: Simplify right side
    426,137.59x = 102,088,438,895.72
  5. Step 5: Solve for x
    x = 102,088,438,895.72/426,137.59
  6. Step 6: Final answer
    x = 239,566.85

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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.