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Finding the Fourth Proportional to 217,612.98, 300,335.24 and 122,124.92

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Solution

The fourth proportional to 217,612.98, 300,335.24 and 122,124.92 is: 168,548.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,612.98 : 300,335.24 = 122,124.92 : x
  2. Step 2: Convert to fraction form
    217,612.98/300,335.24 = 122,124.92/x
  3. Step 3: Cross multiply
    217,612.98x = 300,335.24 × 122,124.92
  4. Step 4: Simplify right side
    217,612.98x = 36,678,415,961.82
  5. Step 5: Solve for x
    x = 36,678,415,961.82/217,612.98
  6. Step 6: Final answer
    x = 168,548.84

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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.