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Finding the Fourth Proportional to 217,117.32, 299,620.14 and 121,624.92

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Solution

The fourth proportional to 217,117.32, 299,620.14 and 121,624.92 is: 167,841.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,117.32 : 299,620.14 = 121,624.92 : x
  2. Step 2: Convert to fraction form
    217,117.32/299,620.14 = 121,624.92/x
  3. Step 3: Cross multiply
    217,117.32x = 299,620.14 × 121,624.92
  4. Step 4: Simplify right side
    217,117.32x = 36,441,275,557.89
  5. Step 5: Solve for x
    x = 36,441,275,557.89/217,117.32
  6. Step 6: Final answer
    x = 167,841.40

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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.