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Finding the Fourth Proportional to 218,039.68, 300,820.08 and 141,654.88

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Solution

The fourth proportional to 218,039.68, 300,820.08 and 141,654.88 is: 195,435.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,039.68 : 300,820.08 = 141,654.88 : x
  2. Step 2: Convert to fraction form
    218,039.68/300,820.08 = 141,654.88/x
  3. Step 3: Cross multiply
    218,039.68x = 300,820.08 × 141,654.88
  4. Step 4: Simplify right side
    218,039.68x = 42,612,632,333.99
  5. Step 5: Solve for x
    x = 42,612,632,333.99/218,039.68
  6. Step 6: Final answer
    x = 195,435.22

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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.