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Finding the Fourth Proportional to 278,508.60, 417,762.90 and 267,622.20

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Solution

The fourth proportional to 278,508.60, 417,762.90 and 267,622.20 is: 401,433.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,508.60 : 417,762.90 = 267,622.20 : x
  2. Step 2: Convert to fraction form
    278,508.60/417,762.90 = 267,622.20/x
  3. Step 3: Cross multiply
    278,508.60x = 417,762.90 × 267,622.20
  4. Step 4: Simplify right side
    278,508.60x = 111,802,626,376.38
  5. Step 5: Solve for x
    x = 111,802,626,376.38/278,508.60
  6. Step 6: Final answer
    x = 401,433.30

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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.