Home / 305,135.28-457,640.30-115,530.39

Finding the Fourth Proportional to 305,135.28, 457,640.30 and 115,530.39

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Solution

The fourth proportional to 305,135.28, 457,640.30 and 115,530.39 is: 173,271.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,135.28 : 457,640.30 = 115,530.39 : x
  2. Step 2: Convert to fraction form
    305,135.28/457,640.30 = 115,530.39/x
  3. Step 3: Cross multiply
    305,135.28x = 457,640.30 × 115,530.39
  4. Step 4: Simplify right side
    305,135.28x = 52,871,361,761.07
  5. Step 5: Solve for x
    x = 52,871,361,761.07/305,135.28
  6. Step 6: Final answer
    x = 173,271.87

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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.