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Finding the Fourth Proportional to 574,259.45, 861,448.10 and 219,571.79

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Solution

The fourth proportional to 574,259.45, 861,448.10 and 219,571.79 is: 329,380.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,259.45 : 861,448.10 = 219,571.79 : x
  2. Step 2: Convert to fraction form
    574,259.45/861,448.10 = 219,571.79/x
  3. Step 3: Cross multiply
    574,259.45x = 861,448.10 × 219,571.79
  4. Step 4: Simplify right side
    574,259.45x = 189,149,695,904.00
  5. Step 5: Solve for x
    x = 189,149,695,904.00/574,259.45
  6. Step 6: Final answer
    x = 329,380.21

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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.