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Finding the Fourth Proportional to 218,793.70, 301,991.48 and 142,502.90

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Solution

The fourth proportional to 218,793.70, 301,991.48 and 142,502.90 is: 196,690.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,793.70 : 301,991.48 = 142,502.90 : x
  2. Step 2: Convert to fraction form
    218,793.70/301,991.48 = 142,502.90/x
  3. Step 3: Cross multiply
    218,793.70x = 301,991.48 × 142,502.90
  4. Step 4: Simplify right side
    218,793.70x = 43,034,662,786.53
  5. Step 5: Solve for x
    x = 43,034,662,786.53/218,793.70
  6. Step 6: Final answer
    x = 196,690.60

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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.