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Finding the Fourth Proportional to 359,514.84, 539,232.43 and 128,694.68

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Solution

The fourth proportional to 359,514.84, 539,232.43 and 128,694.68 is: 193,027.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,514.84 : 539,232.43 = 128,694.68 : x
  2. Step 2: Convert to fraction form
    359,514.84/539,232.43 = 128,694.68/x
  3. Step 3: Cross multiply
    359,514.84x = 539,232.43 × 128,694.68
  4. Step 4: Simplify right side
    359,514.84x = 69,396,345,024.47
  5. Step 5: Solve for x
    x = 69,396,345,024.47/359,514.84
  6. Step 6: Final answer
    x = 193,027.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.