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Finding the Fourth Proportional to 258,326.64, 387,493.80 and 170,144.88

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Solution

The fourth proportional to 258,326.64, 387,493.80 and 170,144.88 is: 255,219.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,326.64 : 387,493.80 = 170,144.88 : x
  2. Step 2: Convert to fraction form
    258,326.64/387,493.80 = 170,144.88/x
  3. Step 3: Cross multiply
    258,326.64x = 387,493.80 × 170,144.88
  4. Step 4: Simplify right side
    258,326.64x = 65,930,086,101.74
  5. Step 5: Solve for x
    x = 65,930,086,101.74/258,326.64
  6. Step 6: Final answer
    x = 255,219.85

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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.