Home / 426,288.87-639,360.61-141,947.15

Finding the Fourth Proportional to 426,288.87, 639,360.61 and 141,947.15

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Solution

The fourth proportional to 426,288.87, 639,360.61 and 141,947.15 is: 212,896.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,288.87 : 639,360.61 = 141,947.15 : x
  2. Step 2: Convert to fraction form
    426,288.87/639,360.61 = 141,947.15/x
  3. Step 3: Cross multiply
    426,288.87x = 639,360.61 × 141,947.15
  4. Step 4: Simplify right side
    426,288.87x = 90,755,414,813.36
  5. Step 5: Solve for x
    x = 90,755,414,813.36/426,288.87
  6. Step 6: Final answer
    x = 212,896.52

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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.