Home / 305,105.33-457,734.20-215,323.28

Finding the Fourth Proportional to 305,105.33, 457,734.20 and 215,323.28

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Solution

The fourth proportional to 305,105.33, 457,734.20 and 215,323.28 is: 323,038.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,105.33 : 457,734.20 = 215,323.28 : x
  2. Step 2: Convert to fraction form
    305,105.33/457,734.20 = 215,323.28/x
  3. Step 3: Cross multiply
    305,105.33x = 457,734.20 × 215,323.28
  4. Step 4: Simplify right side
    305,105.33x = 98,560,828,235.56
  5. Step 5: Solve for x
    x = 98,560,828,235.56/305,105.33
  6. Step 6: Final answer
    x = 323,038.70

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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.