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Finding the Fourth Proportional to 218,711.75, 301,822.23 and 118,109.75

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Solution

The fourth proportional to 218,711.75, 301,822.23 and 118,109.75 is: 162,991.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,711.75 : 301,822.23 = 118,109.75 : x
  2. Step 2: Convert to fraction form
    218,711.75/301,822.23 = 118,109.75/x
  3. Step 3: Cross multiply
    218,711.75x = 301,822.23 × 118,109.75
  4. Step 4: Simplify right side
    218,711.75x = 35,648,148,129.74
  5. Step 5: Solve for x
    x = 35,648,148,129.74/218,711.75
  6. Step 6: Final answer
    x = 162,991.46

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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.