Home / 221,900.16-306,147.42-126,339.19

Finding the Fourth Proportional to 221,900.16, 306,147.42 and 126,339.19

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Solution

The fourth proportional to 221,900.16, 306,147.42 and 126,339.19 is: 174,305.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,900.16 : 306,147.42 = 126,339.19 : x
  2. Step 2: Convert to fraction form
    221,900.16/306,147.42 = 126,339.19/x
  3. Step 3: Cross multiply
    221,900.16x = 306,147.42 × 126,339.19
  4. Step 4: Simplify right side
    221,900.16x = 38,678,418,375.43
  5. Step 5: Solve for x
    x = 38,678,418,375.43/221,900.16
  6. Step 6: Final answer
    x = 174,305.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.