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Finding the Fourth Proportional to 280,194.64, 420,290.88 and 167,908.66

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Solution

The fourth proportional to 280,194.64, 420,290.88 and 167,908.66 is: 251,862.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,194.64 : 420,290.88 = 167,908.66 : x
  2. Step 2: Convert to fraction form
    280,194.64/420,290.88 = 167,908.66/x
  3. Step 3: Cross multiply
    280,194.64x = 420,290.88 × 167,908.66
  4. Step 4: Simplify right side
    280,194.64x = 70,570,478,471.02
  5. Step 5: Solve for x
    x = 70,570,478,471.02/280,194.64
  6. Step 6: Final answer
    x = 251,862.34

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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.