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Finding the Fourth Proportional to 269,870.80, 372,436.24 and 149,011.68

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Solution

The fourth proportional to 269,870.80, 372,436.24 and 149,011.68 is: 205,644.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,870.80 : 372,436.24 = 149,011.68 : x
  2. Step 2: Convert to fraction form
    269,870.80/372,436.24 = 149,011.68/x
  3. Step 3: Cross multiply
    269,870.80x = 372,436.24 × 149,011.68
  4. Step 4: Simplify right side
    269,870.80x = 55,497,349,815.28
  5. Step 5: Solve for x
    x = 55,497,349,815.28/269,870.80
  6. Step 6: Final answer
    x = 205,644.14

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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.