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Finding the Fourth Proportional to 280,412.10, 386,954.15 and 159,550.92

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Solution

The fourth proportional to 280,412.10, 386,954.15 and 159,550.92 is: 220,171.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,412.10 : 386,954.15 = 159,550.92 : x
  2. Step 2: Convert to fraction form
    280,412.10/386,954.15 = 159,550.92/x
  3. Step 3: Cross multiply
    280,412.10x = 386,954.15 × 159,550.92
  4. Step 4: Simplify right side
    280,412.10x = 61,738,889,832.56
  5. Step 5: Solve for x
    x = 61,738,889,832.56/280,412.10
  6. Step 6: Final answer
    x = 220,171.99

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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.