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Finding the Fourth Proportional to 245,498.90, 338,674.08 and 159,451.78

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Solution

The fourth proportional to 245,498.90, 338,674.08 and 159,451.78 is: 219,969.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,498.90 : 338,674.08 = 159,451.78 : x
  2. Step 2: Convert to fraction form
    245,498.90/338,674.08 = 159,451.78/x
  3. Step 3: Cross multiply
    245,498.90x = 338,674.08 × 159,451.78
  4. Step 4: Simplify right side
    245,498.90x = 54,002,184,895.86
  5. Step 5: Solve for x
    x = 54,002,184,895.86/245,498.90
  6. Step 6: Final answer
    x = 219,969.15

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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.