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Finding the Fourth Proportional to 245,216.88, 338,388.50 and 143,251.78

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Solution

The fourth proportional to 245,216.88, 338,388.50 and 143,251.78 is: 197,681.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,216.88 : 338,388.50 = 143,251.78 : x
  2. Step 2: Convert to fraction form
    245,216.88/338,388.50 = 143,251.78/x
  3. Step 3: Cross multiply
    245,216.88x = 338,388.50 × 143,251.78
  4. Step 4: Simplify right side
    245,216.88x = 48,474,754,956.53
  5. Step 5: Solve for x
    x = 48,474,754,956.53/245,216.88
  6. Step 6: Final answer
    x = 197,681.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.