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Finding the Fourth Proportional to 218,757.20, 301,885.13 and 118,155.20

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Solution

The fourth proportional to 218,757.20, 301,885.13 and 118,155.20 is: 163,054.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,757.20 : 301,885.13 = 118,155.20 : x
  2. Step 2: Convert to fraction form
    218,757.20/301,885.13 = 118,155.20/x
  3. Step 3: Cross multiply
    218,757.20x = 301,885.13 × 118,155.20
  4. Step 4: Simplify right side
    218,757.20x = 35,669,295,811.97
  5. Step 5: Solve for x
    x = 35,669,295,811.97/218,757.20
  6. Step 6: Final answer
    x = 163,054.27

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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.