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Finding the Fourth Proportional to 172,370.20, 258,555.30 and 169,745.80

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Solution

The fourth proportional to 172,370.20, 258,555.30 and 169,745.80 is: 254,618.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,370.20 : 258,555.30 = 169,745.80 : x
  2. Step 2: Convert to fraction form
    172,370.20/258,555.30 = 169,745.80/x
  3. Step 3: Cross multiply
    172,370.20x = 258,555.30 × 169,745.80
  4. Step 4: Simplify right side
    172,370.20x = 43,888,676,242.74
  5. Step 5: Solve for x
    x = 43,888,676,242.74/172,370.20
  6. Step 6: Final answer
    x = 254,618.70

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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.