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Finding the Fourth Proportional to 359,254.60, 538,881.90 and 279,939.40

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Solution

The fourth proportional to 359,254.60, 538,881.90 and 279,939.40 is: 419,909.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,254.60 : 538,881.90 = 279,939.40 : x
  2. Step 2: Convert to fraction form
    359,254.60/538,881.90 = 279,939.40/x
  3. Step 3: Cross multiply
    359,254.60x = 538,881.90 × 279,939.40
  4. Step 4: Simplify right side
    359,254.60x = 150,854,275,756.86
  5. Step 5: Solve for x
    x = 150,854,275,756.86/359,254.60
  6. Step 6: Final answer
    x = 419,909.10

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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.