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Finding the Fourth Proportional to 218,981.25, 302,194.53 and 118,379.25

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Solution

The fourth proportional to 218,981.25, 302,194.53 and 118,379.25 is: 163,363.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,981.25 : 302,194.53 = 118,379.25 : x
  2. Step 2: Convert to fraction form
    218,981.25/302,194.53 = 118,379.25/x
  3. Step 3: Cross multiply
    218,981.25x = 302,194.53 × 118,379.25
  4. Step 4: Simplify right side
    218,981.25x = 35,773,561,815.50
  5. Step 5: Solve for x
    x = 35,773,561,815.50/218,981.25
  6. Step 6: Final answer
    x = 163,363.58

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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.