Home / 217,712.07-300,422.12-122,200.11

Finding the Fourth Proportional to 217,712.07, 300,422.12 and 122,200.11

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Solution

The fourth proportional to 217,712.07, 300,422.12 and 122,200.11 is: 168,624.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,712.07 : 300,422.12 = 122,200.11 : x
  2. Step 2: Convert to fraction form
    217,712.07/300,422.12 = 122,200.11/x
  3. Step 3: Cross multiply
    217,712.07x = 300,422.12 × 122,200.11
  4. Step 4: Simplify right side
    217,712.07x = 36,711,615,499.43
  5. Step 5: Solve for x
    x = 36,711,615,499.43/217,712.07
  6. Step 6: Final answer
    x = 168,624.62

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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.