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Finding the Fourth Proportional to 239,810, 330,943.08 and 132,379.76

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Solution

The fourth proportional to 239,810, 330,943.08 and 132,379.76 is: 182,686.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,810 : 330,943.08 = 132,379.76 : x
  2. Step 2: Convert to fraction form
    239,810/330,943.08 = 132,379.76/x
  3. Step 3: Cross multiply
    239,810x = 330,943.08 × 132,379.76
  4. Step 4: Simplify right side
    239,810x = 43,810,165,504.06
  5. Step 5: Solve for x
    x = 43,810,165,504.06/239,810
  6. Step 6: Final answer
    x = 182,686.98

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1.5x scale

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.