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Finding the Fourth Proportional to 359,512.40, 539,009.40 and 201,789.20

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Solution

The fourth proportional to 359,512.40, 539,009.40 and 201,789.20 is: 302,538.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,512.40 : 539,009.40 = 201,789.20 : x
  2. Step 2: Convert to fraction form
    359,512.40/539,009.40 = 201,789.20/x
  3. Step 3: Cross multiply
    359,512.40x = 539,009.40 × 201,789.20
  4. Step 4: Simplify right side
    359,512.40x = 108,766,275,618.48
  5. Step 5: Solve for x
    x = 108,766,275,618.48/359,512.40
  6. Step 6: Final answer
    x = 302,538.31

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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.