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Finding the Fourth Proportional to 375,067.31, 516,973.50 and 279,539.15

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Solution

The fourth proportional to 375,067.31, 516,973.50 and 279,539.15 is: 385,302.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,067.31 : 516,973.50 = 279,539.15 : x
  2. Step 2: Convert to fraction form
    375,067.31/516,973.50 = 279,539.15/x
  3. Step 3: Cross multiply
    375,067.31x = 516,973.50 × 279,539.15
  4. Step 4: Simplify right side
    375,067.31x = 144,514,330,177.66
  5. Step 5: Solve for x
    x = 144,514,330,177.66/375,067.31
  6. Step 6: Final answer
    x = 385,302.39

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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.