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Finding the Fourth Proportional to 223,480.57, 308,398.71 and 121,508.05

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Solution

The fourth proportional to 223,480.57, 308,398.71 and 121,508.05 is: 167,678.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,480.57 : 308,398.71 = 121,508.05 : x
  2. Step 2: Convert to fraction form
    223,480.57/308,398.71 = 121,508.05/x
  3. Step 3: Cross multiply
    223,480.57x = 308,398.71 × 121,508.05
  4. Step 4: Simplify right side
    223,480.57x = 37,472,925,874.62
  5. Step 5: Solve for x
    x = 37,472,925,874.62/223,480.57
  6. Step 6: Final answer
    x = 167,678.68

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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.