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Finding the Fourth Proportional to 313,703.20, 469,863.60 and 188,826.40

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Solution

The fourth proportional to 313,703.20, 469,863.60 and 188,826.40 is: 282,823.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,703.20 : 469,863.60 = 188,826.40 : x
  2. Step 2: Convert to fraction form
    313,703.20/469,863.60 = 188,826.40/x
  3. Step 3: Cross multiply
    313,703.20x = 469,863.60 × 188,826.40
  4. Step 4: Simplify right side
    313,703.20x = 88,722,652,079.04
  5. Step 5: Solve for x
    x = 88,722,652,079.04/313,703.20
  6. Step 6: Final answer
    x = 282,823.55

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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.