Home / 426,176.80-639,265.20-267,546.40

Finding the Fourth Proportional to 426,176.80, 639,265.20 and 267,546.40

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Solution

The fourth proportional to 426,176.80, 639,265.20 and 267,546.40 is: 401,319.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,176.80 : 639,265.20 = 267,546.40 : x
  2. Step 2: Convert to fraction form
    426,176.80/639,265.20 = 267,546.40/x
  3. Step 3: Cross multiply
    426,176.80x = 639,265.20 × 267,546.40
  4. Step 4: Simplify right side
    426,176.80x = 171,033,102,905.28
  5. Step 5: Solve for x
    x = 171,033,102,905.28/426,176.80
  6. Step 6: Final answer
    x = 401,319.60

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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.