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Finding the Fourth Proportional to 218,793.13, 301,934.79 and 118,191.13

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Solution

The fourth proportional to 218,793.13, 301,934.79 and 118,191.13 is: 163,103.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,793.13 : 301,934.79 = 118,191.13 : x
  2. Step 2: Convert to fraction form
    218,793.13/301,934.79 = 118,191.13/x
  3. Step 3: Cross multiply
    218,793.13x = 301,934.79 × 118,191.13
  4. Step 4: Simplify right side
    218,793.13x = 35,686,012,506.74
  5. Step 5: Solve for x
    x = 35,686,012,506.74/218,793.13
  6. Step 6: Final answer
    x = 163,103.90

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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.