Home / 280,229.28-420,449.08-167,989.47

Finding the Fourth Proportional to 280,229.28, 420,449.08 and 167,989.47

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Solution

The fourth proportional to 280,229.28, 420,449.08 and 167,989.47 is: 252,047.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,229.28 : 420,449.08 = 167,989.47 : x
  2. Step 2: Convert to fraction form
    280,229.28/420,449.08 = 167,989.47/x
  3. Step 3: Cross multiply
    280,229.28x = 420,449.08 × 167,989.47
  4. Step 4: Simplify right side
    280,229.28x = 70,631,018,111.19
  5. Step 5: Solve for x
    x = 70,631,018,111.19/280,229.28
  6. Step 6: Final answer
    x = 252,047.25

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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.