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Finding the Fourth Proportional to 172,319.40, 258,479.51 and 52,377.44

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Solution

The fourth proportional to 172,319.40, 258,479.51 and 52,377.44 is: 78,566.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,319.40 : 258,479.51 = 52,377.44 : x
  2. Step 2: Convert to fraction form
    172,319.40/258,479.51 = 52,377.44/x
  3. Step 3: Cross multiply
    172,319.40x = 258,479.51 × 52,377.44
  4. Step 4: Simplify right side
    172,319.40x = 13,538,493,471.97
  5. Step 5: Solve for x
    x = 13,538,493,471.97/172,319.40
  6. Step 6: Final answer
    x = 78,566.28

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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.