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Finding the Fourth Proportional to 315,229.30, 472,676.84 and 137,528.72

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Solution

The fourth proportional to 315,229.30, 472,676.84 and 137,528.72 is: 206,220.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,229.30 : 472,676.84 = 137,528.72 : x
  2. Step 2: Convert to fraction form
    315,229.30/472,676.84 = 137,528.72/x
  3. Step 3: Cross multiply
    315,229.30x = 472,676.84 × 137,528.72
  4. Step 4: Simplify right side
    315,229.30x = 65,006,640,778.84
  5. Step 5: Solve for x
    x = 65,006,640,778.84/315,229.30
  6. Step 6: Final answer
    x = 206,220.17

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1.5x scale

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.