Home / 280,230.66-386,607.20-172,614.06

Finding the Fourth Proportional to 280,230.66, 386,607.20 and 172,614.06

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Solution

The fourth proportional to 280,230.66, 386,607.20 and 172,614.06 is: 238,138.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,230.66 : 386,607.20 = 172,614.06 : x
  2. Step 2: Convert to fraction form
    280,230.66/386,607.20 = 172,614.06/x
  3. Step 3: Cross multiply
    280,230.66x = 386,607.20 × 172,614.06
  4. Step 4: Simplify right side
    280,230.66x = 66,733,837,554.16
  5. Step 5: Solve for x
    x = 66,733,837,554.16/280,230.66
  6. Step 6: Final answer
    x = 238,138.96

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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.