Home / 261,811.31-392,725.49-72,285.89

Finding the Fourth Proportional to 261,811.31, 392,725.49 and 72,285.89

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Solution

The fourth proportional to 261,811.31, 392,725.49 and 72,285.89 is: 108,431.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,811.31 : 392,725.49 = 72,285.89 : x
  2. Step 2: Convert to fraction form
    261,811.31/392,725.49 = 72,285.89/x
  3. Step 3: Cross multiply
    261,811.31x = 392,725.49 × 72,285.89
  4. Step 4: Simplify right side
    261,811.31x = 28,388,509,245.28
  5. Step 5: Solve for x
    x = 28,388,509,245.28/261,811.31
  6. Step 6: Final answer
    x = 108,431.18

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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.