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Finding the Fourth Proportional to 402,542.75, 603,813.61 and 103,023.48

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Solution

The fourth proportional to 402,542.75, 603,813.61 and 103,023.48 is: 154,535.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,542.75 : 603,813.61 = 103,023.48 : x
  2. Step 2: Convert to fraction form
    402,542.75/603,813.61 = 103,023.48/x
  3. Step 3: Cross multiply
    402,542.75x = 603,813.61 × 103,023.48
  4. Step 4: Simplify right side
    402,542.75x = 62,206,979,373.56
  5. Step 5: Solve for x
    x = 62,206,979,373.56/402,542.75
  6. Step 6: Final answer
    x = 154,535.09

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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.