Home / 280,231.41-386,608.23-172,614.81

Finding the Fourth Proportional to 280,231.41, 386,608.23 and 172,614.81

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Solution

The fourth proportional to 280,231.41, 386,608.23 and 172,614.81 is: 238,139.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,231.41 : 386,608.23 = 172,614.81 : x
  2. Step 2: Convert to fraction form
    280,231.41/386,608.23 = 172,614.81/x
  3. Step 3: Cross multiply
    280,231.41x = 386,608.23 × 172,614.81
  4. Step 4: Simplify right side
    280,231.41x = 66,734,306,165.89
  5. Step 5: Solve for x
    x = 66,734,306,165.89/280,231.41
  6. Step 6: Final answer
    x = 238,139.99

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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.