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Finding the Fourth Proportional to 389,251.98, 583,800.21 and 108,771.66

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Solution

The fourth proportional to 389,251.98, 583,800.21 and 108,771.66 is: 163,135.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,251.98 : 583,800.21 = 108,771.66 : x
  2. Step 2: Convert to fraction form
    389,251.98/583,800.21 = 108,771.66/x
  3. Step 3: Cross multiply
    389,251.98x = 583,800.21 × 108,771.66
  4. Step 4: Simplify right side
    389,251.98x = 63,500,917,950.05
  5. Step 5: Solve for x
    x = 63,500,917,950.05/389,251.98
  6. Step 6: Final answer
    x = 163,135.76

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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.