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Finding the Fourth Proportional to 372,452.67, 513,996.35 and 211,314.51

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Solution

The fourth proportional to 372,452.67, 513,996.35 and 211,314.51 is: 291,620.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,452.67 : 513,996.35 = 211,314.51 : x
  2. Step 2: Convert to fraction form
    372,452.67/513,996.35 = 211,314.51/x
  3. Step 3: Cross multiply
    372,452.67x = 513,996.35 × 211,314.51
  4. Step 4: Simplify right side
    372,452.67x = 108,614,885,785.47
  5. Step 5: Solve for x
    x = 108,614,885,785.47/372,452.67
  6. Step 6: Final answer
    x = 291,620.64

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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.