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Finding the Fourth Proportional to 239,671.89, 359,507.84 and 81,901.71

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Solution

The fourth proportional to 239,671.89, 359,507.84 and 81,901.71 is: 122,852.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,671.89 : 359,507.84 = 81,901.71 : x
  2. Step 2: Convert to fraction form
    239,671.89/359,507.84 = 81,901.71/x
  3. Step 3: Cross multiply
    239,671.89x = 359,507.84 × 81,901.71
  4. Step 4: Simplify right side
    239,671.89x = 29,444,306,444.90
  5. Step 5: Solve for x
    x = 29,444,306,444.90/239,671.89
  6. Step 6: Final answer
    x = 122,852.57

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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.