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Finding the Fourth Proportional to 386,844.60, 580,266.90 and 254,134.20

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Solution

The fourth proportional to 386,844.60, 580,266.90 and 254,134.20 is: 381,201.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,844.60 : 580,266.90 = 254,134.20 : x
  2. Step 2: Convert to fraction form
    386,844.60/580,266.90 = 254,134.20/x
  3. Step 3: Cross multiply
    386,844.60x = 580,266.90 × 254,134.20
  4. Step 4: Simplify right side
    386,844.60x = 147,465,664,417.98
  5. Step 5: Solve for x
    x = 147,465,664,417.98/386,844.60
  6. Step 6: Final answer
    x = 381,201.30

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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.