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Finding the Fourth Proportional to 353,132.80, 528,921.60 and 313,734.40

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Solution

The fourth proportional to 353,132.80, 528,921.60 and 313,734.40 is: 469,910.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,132.80 : 528,921.60 = 313,734.40 : x
  2. Step 2: Convert to fraction form
    353,132.80/528,921.60 = 313,734.40/x
  3. Step 3: Cross multiply
    353,132.80x = 528,921.60 × 313,734.40
  4. Step 4: Simplify right side
    353,132.80x = 165,940,900,823.04
  5. Step 5: Solve for x
    x = 165,940,900,823.04/353,132.80
  6. Step 6: Final answer
    x = 469,910.76

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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.