Home / 426,371.89-639,343.90-141,962.26

Finding the Fourth Proportional to 426,371.89, 639,343.90 and 141,962.26

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Solution

The fourth proportional to 426,371.89, 639,343.90 and 141,962.26 is: 212,872.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,371.89 : 639,343.90 = 141,962.26 : x
  2. Step 2: Convert to fraction form
    426,371.89/639,343.90 = 141,962.26/x
  3. Step 3: Cross multiply
    426,371.89x = 639,343.90 × 141,962.26
  4. Step 4: Simplify right side
    426,371.89x = 90,762,704,251.40
  5. Step 5: Solve for x
    x = 90,762,704,251.40/426,371.89
  6. Step 6: Final answer
    x = 212,872.16

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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.