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Finding the Fourth Proportional to 578,634.80, 868,081.80 and 223,617.20

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Solution

The fourth proportional to 578,634.80, 868,081.80 and 223,617.20 is: 335,475.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,634.80 : 868,081.80 = 223,617.20 : x
  2. Step 2: Convert to fraction form
    578,634.80/868,081.80 = 223,617.20/x
  3. Step 3: Cross multiply
    578,634.80x = 868,081.80 × 223,617.20
  4. Step 4: Simplify right side
    578,634.80x = 194,118,021,486.96
  5. Step 5: Solve for x
    x = 194,118,021,486.96/578,634.80
  6. Step 6: Final answer
    x = 335,475.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.