Home / 261,158.03-391,737.17-172,390.79

Finding the Fourth Proportional to 261,158.03, 391,737.17 and 172,390.79

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Solution

The fourth proportional to 261,158.03, 391,737.17 and 172,390.79 is: 258,586.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,158.03 : 391,737.17 = 172,390.79 : x
  2. Step 2: Convert to fraction form
    261,158.03/391,737.17 = 172,390.79/x
  3. Step 3: Cross multiply
    261,158.03x = 391,737.17 × 172,390.79
  4. Step 4: Simplify right side
    261,158.03x = 67,531,877,388.02
  5. Step 5: Solve for x
    x = 67,531,877,388.02/261,158.03
  6. Step 6: Final answer
    x = 258,586.26

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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.