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Finding the Fourth Proportional to 328,074.52, 490,314.05 and 239,514.52

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Solution

The fourth proportional to 328,074.52, 490,314.05 and 239,514.52 is: 357,959.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,074.52 : 490,314.05 = 239,514.52 : x
  2. Step 2: Convert to fraction form
    328,074.52/490,314.05 = 239,514.52/x
  3. Step 3: Cross multiply
    328,074.52x = 490,314.05 × 239,514.52
  4. Step 4: Simplify right side
    328,074.52x = 117,437,334,335.01
  5. Step 5: Solve for x
    x = 117,437,334,335.01/328,074.52
  6. Step 6: Final answer
    x = 357,959.33

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.