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Finding the Fourth Proportional to 372,377.01, 513,865.14 and 211,228.59

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Solution

The fourth proportional to 372,377.01, 513,865.14 and 211,228.59 is: 291,486.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,377.01 : 513,865.14 = 211,228.59 : x
  2. Step 2: Convert to fraction form
    372,377.01/513,865.14 = 211,228.59/x
  3. Step 3: Cross multiply
    372,377.01x = 513,865.14 × 211,228.59
  4. Step 4: Simplify right side
    372,377.01x = 108,543,010,574.95
  5. Step 5: Solve for x
    x = 108,543,010,574.95/372,377.01
  6. Step 6: Final answer
    x = 291,486.88

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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.