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Finding the Fourth Proportional to 359,301.60, 538,952.40 and 279,986.40

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Solution

The fourth proportional to 359,301.60, 538,952.40 and 279,986.40 is: 419,979.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,301.60 : 538,952.40 = 279,986.40 : x
  2. Step 2: Convert to fraction form
    359,301.60/538,952.40 = 279,986.40/x
  3. Step 3: Cross multiply
    359,301.60x = 538,952.40 × 279,986.40
  4. Step 4: Simplify right side
    359,301.60x = 150,899,342,247.36
  5. Step 5: Solve for x
    x = 150,899,342,247.36/359,301.60
  6. Step 6: Final answer
    x = 419,979.60

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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.