Home / 426,157.38-639,069.84-159,772.50

Finding the Fourth Proportional to 426,157.38, 639,069.84 and 159,772.50

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Solution

The fourth proportional to 426,157.38, 639,069.84 and 159,772.50 is: 239,596.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,157.38 : 639,069.84 = 159,772.50 : x
  2. Step 2: Convert to fraction form
    426,157.38/639,069.84 = 159,772.50/x
  3. Step 3: Cross multiply
    426,157.38x = 639,069.84 × 159,772.50
  4. Step 4: Simplify right side
    426,157.38x = 102,105,786,011.40
  5. Step 5: Solve for x
    x = 102,105,786,011.40/426,157.38
  6. Step 6: Final answer
    x = 239,596.43

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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.