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Finding the Fourth Proportional to 269,925.52, 405,133.92 and 143,671.72

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Solution

The fourth proportional to 269,925.52, 405,133.92 and 143,671.72 is: 215,638.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,925.52 : 405,133.92 = 143,671.72 : x
  2. Step 2: Convert to fraction form
    269,925.52/405,133.92 = 143,671.72/x
  3. Step 3: Cross multiply
    269,925.52x = 405,133.92 × 143,671.72
  4. Step 4: Simplify right side
    269,925.52x = 58,206,287,116.74
  5. Step 5: Solve for x
    x = 58,206,287,116.74/269,925.52
  6. Step 6: Final answer
    x = 215,638.33

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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.