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Finding the Fourth Proportional to 185,616.72, 278,468.28 and 80,446.32

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Solution

The fourth proportional to 185,616.72, 278,468.28 and 80,446.32 is: 120,688.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,616.72 : 278,468.28 = 80,446.32 : x
  2. Step 2: Convert to fraction form
    185,616.72/278,468.28 = 80,446.32/x
  3. Step 3: Cross multiply
    185,616.72x = 278,468.28 × 80,446.32
  4. Step 4: Simplify right side
    185,616.72x = 22,401,748,362.73
  5. Step 5: Solve for x
    x = 22,401,748,362.73/185,616.72
  6. Step 6: Final answer
    x = 120,688.20

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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.