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Finding the Fourth Proportional to 372,377.51, 513,865.83 and 211,229.10

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Solution

The fourth proportional to 372,377.51, 513,865.83 and 211,229.10 is: 291,487.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,377.51 : 513,865.83 = 211,229.10 : x
  2. Step 2: Convert to fraction form
    372,377.51/513,865.83 = 211,229.10/x
  3. Step 3: Cross multiply
    372,377.51x = 513,865.83 × 211,229.10
  4. Step 4: Simplify right side
    372,377.51x = 108,543,413,166.18
  5. Step 5: Solve for x
    x = 108,543,413,166.18/372,377.51
  6. Step 6: Final answer
    x = 291,487.57

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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.