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Finding the Fourth Proportional to 242,645.70, 363,968.55 and 218,151.30

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Solution

The fourth proportional to 242,645.70, 363,968.55 and 218,151.30 is: 327,226.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,645.70 : 363,968.55 = 218,151.30 : x
  2. Step 2: Convert to fraction form
    242,645.70/363,968.55 = 218,151.30/x
  3. Step 3: Cross multiply
    242,645.70x = 363,968.55 × 218,151.30
  4. Step 4: Simplify right side
    242,645.70x = 79,400,212,341.62
  5. Step 5: Solve for x
    x = 79,400,212,341.62/242,645.70
  6. Step 6: Final answer
    x = 327,226.95

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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.