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Finding the Fourth Proportional to 372,377.38, 513,865.65 and 211,228.97

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Solution

The fourth proportional to 372,377.38, 513,865.65 and 211,228.97 is: 291,487.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,377.38 : 513,865.65 = 211,228.97 : x
  2. Step 2: Convert to fraction form
    372,377.38/513,865.65 = 211,228.97/x
  3. Step 3: Cross multiply
    372,377.38x = 513,865.65 × 211,228.97
  4. Step 4: Simplify right side
    372,377.38x = 108,543,313,081.16
  5. Step 5: Solve for x
    x = 108,543,313,081.16/372,377.38
  6. Step 6: Final answer
    x = 291,487.40

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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.