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Finding the Fourth Proportional to 359,999.80, 539,654.10 and 279,993.40

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Solution

The fourth proportional to 359,999.80, 539,654.10 and 279,993.40 is: 419,721.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,999.80 : 539,654.10 = 279,993.40 : x
  2. Step 2: Convert to fraction form
    359,999.80/539,654.10 = 279,993.40/x
  3. Step 3: Cross multiply
    359,999.80x = 539,654.10 × 279,993.40
  4. Step 4: Simplify right side
    359,999.80x = 151,099,586,282.94
  5. Step 5: Solve for x
    x = 151,099,586,282.94/359,999.80
  6. Step 6: Final answer
    x = 419,721.31

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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.