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Finding the Fourth Proportional to 217,442.68, 300,073.06 and 121,947.32

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Solution

The fourth proportional to 217,442.68, 300,073.06 and 121,947.32 is: 168,288.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,442.68 : 300,073.06 = 121,947.32 : x
  2. Step 2: Convert to fraction form
    217,442.68/300,073.06 = 121,947.32/x
  3. Step 3: Cross multiply
    217,442.68x = 300,073.06 × 121,947.32
  4. Step 4: Simplify right side
    217,442.68x = 36,593,105,471.20
  5. Step 5: Solve for x
    x = 36,593,105,471.20/217,442.68
  6. Step 6: Final answer
    x = 168,288.51

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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.