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Finding the Fourth Proportional to 573,870.20, 861,133.35 and 219,138.80

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Solution

The fourth proportional to 573,870.20, 861,133.35 and 219,138.80 is: 328,833.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,870.20 : 861,133.35 = 219,138.80 : x
  2. Step 2: Convert to fraction form
    573,870.20/861,133.35 = 219,138.80/x
  3. Step 3: Cross multiply
    573,870.20x = 861,133.35 × 219,138.80
  4. Step 4: Simplify right side
    573,870.20x = 188,707,728,958.98
  5. Step 5: Solve for x
    x = 188,707,728,958.98/573,870.20
  6. Step 6: Final answer
    x = 328,833.47

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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.