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Finding the Fourth Proportional to 239,302.88, 330,240.14 and 131,876.76

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Solution

The fourth proportional to 239,302.88, 330,240.14 and 131,876.76 is: 181,991.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,302.88 : 330,240.14 = 131,876.76 : x
  2. Step 2: Convert to fraction form
    239,302.88/330,240.14 = 131,876.76/x
  3. Step 3: Cross multiply
    239,302.88x = 330,240.14 × 131,876.76
  4. Step 4: Simplify right side
    239,302.88x = 43,550,999,025.76
  5. Step 5: Solve for x
    x = 43,550,999,025.76/239,302.88
  6. Step 6: Final answer
    x = 181,991.12

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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.