Home / 254,443.20-381,338.40-142,123.20

Finding the Fourth Proportional to 254,443.20, 381,338.40 and 142,123.20

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Solution

The fourth proportional to 254,443.20, 381,338.40 and 142,123.20 is: 213,002.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,443.20 : 381,338.40 = 142,123.20 : x
  2. Step 2: Convert to fraction form
    254,443.20/381,338.40 = 142,123.20/x
  3. Step 3: Cross multiply
    254,443.20x = 381,338.40 × 142,123.20
  4. Step 4: Simplify right side
    254,443.20x = 54,197,033,690.88
  5. Step 5: Solve for x
    x = 54,197,033,690.88/254,443.20
  6. Step 6: Final answer
    x = 213,002.48

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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.