Home / 426,159.36-639,239.04-145,679.04

Finding the Fourth Proportional to 426,159.36, 639,239.04 and 145,679.04

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Solution

The fourth proportional to 426,159.36, 639,239.04 and 145,679.04 is: 218,518.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,159.36 : 639,239.04 = 145,679.04 : x
  2. Step 2: Convert to fraction form
    426,159.36/639,239.04 = 145,679.04/x
  3. Step 3: Cross multiply
    426,159.36x = 639,239.04 × 145,679.04
  4. Step 4: Simplify right side
    426,159.36x = 93,123,729,677.72
  5. Step 5: Solve for x
    x = 93,123,729,677.72/426,159.36
  6. Step 6: Final answer
    x = 218,518.56

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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.