Home / 261,427.80-391,157.55-172,854.30

Finding the Fourth Proportional to 261,427.80, 391,157.55 and 172,854.30

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Solution

The fourth proportional to 261,427.80, 391,157.55 and 172,854.30 is: 258,630.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,427.80 : 391,157.55 = 172,854.30 : x
  2. Step 2: Convert to fraction form
    261,427.80/391,157.55 = 172,854.30/x
  3. Step 3: Cross multiply
    261,427.80x = 391,157.55 × 172,854.30
  4. Step 4: Simplify right side
    261,427.80x = 67,613,264,494.97
  5. Step 5: Solve for x
    x = 67,613,264,494.97/261,427.80
  6. Step 6: Final answer
    x = 258,630.74

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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.