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Finding the Fourth Proportional to 239,672.89, 359,509.34 and 81,902.71

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Solution

The fourth proportional to 239,672.89, 359,509.34 and 81,902.71 is: 122,854.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,672.89 : 359,509.34 = 81,902.71 : x
  2. Step 2: Convert to fraction form
    239,672.89/359,509.34 = 81,902.71/x
  3. Step 3: Cross multiply
    239,672.89x = 359,509.34 × 81,902.71
  4. Step 4: Simplify right side
    239,672.89x = 29,444,789,216.31
  5. Step 5: Solve for x
    x = 29,444,789,216.31/239,672.89
  6. Step 6: Final answer
    x = 122,854.07

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1.5x scale

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.