Home / 218,821.89-301,974.18-118,219.89

Finding the Fourth Proportional to 218,821.89, 301,974.18 and 118,219.89

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Solution

The fourth proportional to 218,821.89, 301,974.18 and 118,219.89 is: 163,143.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,821.89 : 301,974.18 = 118,219.89 : x
  2. Step 2: Convert to fraction form
    218,821.89/301,974.18 = 118,219.89/x
  3. Step 3: Cross multiply
    218,821.89x = 301,974.18 × 118,219.89
  4. Step 4: Simplify right side
    218,821.89x = 35,699,354,342.44
  5. Step 5: Solve for x
    x = 35,699,354,342.44/218,821.89
  6. Step 6: Final answer
    x = 163,143.43

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1.5x scale

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.