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Finding the Fourth Proportional to 426,166.80, 639,250.20 and 267,536.40

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Solution

The fourth proportional to 426,166.80, 639,250.20 and 267,536.40 is: 401,304.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,166.80 : 639,250.20 = 267,536.40 : x
  2. Step 2: Convert to fraction form
    426,166.80/639,250.20 = 267,536.40/x
  3. Step 3: Cross multiply
    426,166.80x = 639,250.20 × 267,536.40
  4. Step 4: Simplify right side
    426,166.80x = 171,022,697,207.28
  5. Step 5: Solve for x
    x = 171,022,697,207.28/426,166.80
  6. Step 6: Final answer
    x = 401,304.60

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1.5x scale

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.