Home / 426,442.50-639,666.99-145,962.18

Finding the Fourth Proportional to 426,442.50, 639,666.99 and 145,962.18

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Solution

The fourth proportional to 426,442.50, 639,666.99 and 145,962.18 is: 218,944.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,442.50 : 639,666.99 = 145,962.18 : x
  2. Step 2: Convert to fraction form
    426,442.50/639,666.99 = 145,962.18/x
  3. Step 3: Cross multiply
    426,442.50x = 639,666.99 × 145,962.18
  4. Step 4: Simplify right side
    426,442.50x = 93,367,188,334.44
  5. Step 5: Solve for x
    x = 93,367,188,334.44/426,442.50
  6. Step 6: Final answer
    x = 218,944.38

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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.