Home / 426,111.20-639,166.80-268,517.60

Finding the Fourth Proportional to 426,111.20, 639,166.80 and 268,517.60

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Solution

The fourth proportional to 426,111.20, 639,166.80 and 268,517.60 is: 402,776.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,111.20 : 639,166.80 = 268,517.60 : x
  2. Step 2: Convert to fraction form
    426,111.20/639,166.80 = 268,517.60/x
  3. Step 3: Cross multiply
    426,111.20x = 639,166.80 × 268,517.60
  4. Step 4: Simplify right side
    426,111.20x = 171,627,535,135.68
  5. Step 5: Solve for x
    x = 171,627,535,135.68/426,111.20
  6. Step 6: Final answer
    x = 402,776.40

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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.