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Finding the Fourth Proportional to 389,149.55, 537,039.73 and 225,793.71

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Solution

The fourth proportional to 389,149.55, 537,039.73 and 225,793.71 is: 311,603.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,149.55 : 537,039.73 = 225,793.71 : x
  2. Step 2: Convert to fraction form
    389,149.55/537,039.73 = 225,793.71/x
  3. Step 3: Cross multiply
    389,149.55x = 537,039.73 × 225,793.71
  4. Step 4: Simplify right side
    389,149.55x = 121,260,193,054.10
  5. Step 5: Solve for x
    x = 121,260,193,054.10/389,149.55
  6. Step 6: Final answer
    x = 311,603.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.