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Finding the Fourth Proportional to 245,402.88, 338,665.68 and 143,494.08

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Solution

The fourth proportional to 245,402.88, 338,665.68 and 143,494.08 is: 198,027.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,402.88 : 338,665.68 = 143,494.08 : x
  2. Step 2: Convert to fraction form
    245,402.88/338,665.68 = 143,494.08/x
  3. Step 3: Cross multiply
    245,402.88x = 338,665.68 × 143,494.08
  4. Step 4: Simplify right side
    245,402.88x = 48,596,520,179.17
  5. Step 5: Solve for x
    x = 48,596,520,179.17/245,402.88
  6. Step 6: Final answer
    x = 198,027.51

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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.