Home / 272,439.72-407,872.26-172,712.52

Finding the Fourth Proportional to 272,439.72, 407,872.26 and 172,712.52

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Solution

The fourth proportional to 272,439.72, 407,872.26 and 172,712.52 is: 258,569.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,439.72 : 407,872.26 = 172,712.52 : x
  2. Step 2: Convert to fraction form
    272,439.72/407,872.26 = 172,712.52/x
  3. Step 3: Cross multiply
    272,439.72x = 407,872.26 × 172,712.52
  4. Step 4: Simplify right side
    272,439.72x = 70,444,645,862.70
  5. Step 5: Solve for x
    x = 70,444,645,862.70/272,439.72
  6. Step 6: Final answer
    x = 258,569.66

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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.