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Finding the Fourth Proportional to 318,860.88, 478,118.17 and 158,584.76

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Solution

The fourth proportional to 318,860.88, 478,118.17 and 158,584.76 is: 237,791.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,860.88 : 478,118.17 = 158,584.76 : x
  2. Step 2: Convert to fraction form
    318,860.88/478,118.17 = 158,584.76/x
  3. Step 3: Cross multiply
    318,860.88x = 478,118.17 × 158,584.76
  4. Step 4: Simplify right side
    318,860.88x = 75,822,255,241.09
  5. Step 5: Solve for x
    x = 75,822,255,241.09/318,860.88
  6. Step 6: Final answer
    x = 237,791.02

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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.