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Finding the Fourth Proportional to 239,672.80, 359,458.80 and 121,232.80

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Solution

The fourth proportional to 239,672.80, 359,458.80 and 121,232.80 is: 181,823.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,672.80 : 359,458.80 = 121,232.80 : x
  2. Step 2: Convert to fraction form
    239,672.80/359,458.80 = 121,232.80/x
  3. Step 3: Cross multiply
    239,672.80x = 359,458.80 × 121,232.80
  4. Step 4: Simplify right side
    239,672.80x = 43,578,196,808.64
  5. Step 5: Solve for x
    x = 43,578,196,808.64/239,672.80
  6. Step 6: Final answer
    x = 181,823.71

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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.