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Finding the Fourth Proportional to 217,730.88, 300,473.28 and 122,240.16

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Solution

The fourth proportional to 217,730.88, 300,473.28 and 122,240.16 is: 168,694.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,730.88 : 300,473.28 = 122,240.16 : x
  2. Step 2: Convert to fraction form
    217,730.88/300,473.28 = 122,240.16/x
  3. Step 3: Cross multiply
    217,730.88x = 300,473.28 × 122,240.16
  4. Step 4: Simplify right side
    217,730.88x = 36,729,901,822.92
  5. Step 5: Solve for x
    x = 36,729,901,822.92/217,730.88
  6. Step 6: Final answer
    x = 168,694.04

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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.