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Finding the Fourth Proportional to 359,971.83, 539,145.79 and 279,365.83

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Solution

The fourth proportional to 359,971.83, 539,145.79 and 279,365.83 is: 418,418.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,971.83 : 539,145.79 = 279,365.83 : x
  2. Step 2: Convert to fraction form
    359,971.83/539,145.79 = 279,365.83/x
  3. Step 3: Cross multiply
    359,971.83x = 539,145.79 × 279,365.83
  4. Step 4: Simplify right side
    359,971.83x = 150,618,909,068.08
  5. Step 5: Solve for x
    x = 150,618,909,068.08/359,971.83
  6. Step 6: Final answer
    x = 418,418.60

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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.