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Finding the Fourth Proportional to 561,913.86, 842,730.48 and 220,426.69

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Solution

The fourth proportional to 561,913.86, 842,730.48 and 220,426.69 is: 330,584.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,913.86 : 842,730.48 = 220,426.69 : x
  2. Step 2: Convert to fraction form
    561,913.86/842,730.48 = 220,426.69/x
  3. Step 3: Cross multiply
    561,913.86x = 842,730.48 × 220,426.69
  4. Step 4: Simplify right side
    561,913.86x = 185,760,288,161.69
  5. Step 5: Solve for x
    x = 185,760,288,161.69/561,913.86
  6. Step 6: Final answer
    x = 330,584.99

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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.