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Finding the Fourth Proportional to 218,965.43, 302,172.37 and 118,363.43

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Solution

The fourth proportional to 218,965.43, 302,172.37 and 118,363.43 is: 163,341.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,965.43 : 302,172.37 = 118,363.43 : x
  2. Step 2: Convert to fraction form
    218,965.43/302,172.37 = 118,363.43/x
  3. Step 3: Cross multiply
    218,965.43x = 302,172.37 × 118,363.43
  4. Step 4: Simplify right side
    218,965.43x = 35,766,156,357.66
  5. Step 5: Solve for x
    x = 35,766,156,357.66/218,965.43
  6. Step 6: Final answer
    x = 163,341.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.