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Finding the Fourth Proportional to 218,980.12, 302,169.96 and 161,649.92

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Solution

The fourth proportional to 218,980.12, 302,169.96 and 161,649.92 is: 223,060.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,980.12 : 302,169.96 = 161,649.92 : x
  2. Step 2: Convert to fraction form
    218,980.12/302,169.96 = 161,649.92/x
  3. Step 3: Cross multiply
    218,980.12x = 302,169.96 × 161,649.92
  4. Step 4: Simplify right side
    218,980.12x = 48,845,749,860.40
  5. Step 5: Solve for x
    x = 48,845,749,860.40/218,980.12
  6. Step 6: Final answer
    x = 223,060.20

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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.