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Finding the Fourth Proportional to 353,080.80, 528,843.60 and 247,327.20

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Solution

The fourth proportional to 353,080.80, 528,843.60 and 247,327.20 is: 370,446.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,080.80 : 528,843.60 = 247,327.20 : x
  2. Step 2: Convert to fraction form
    353,080.80/528,843.60 = 247,327.20/x
  3. Step 3: Cross multiply
    353,080.80x = 528,843.60 × 247,327.20
  4. Step 4: Simplify right side
    353,080.80x = 130,797,406,825.92
  5. Step 5: Solve for x
    x = 130,797,406,825.92/353,080.80
  6. Step 6: Final answer
    x = 370,446.10

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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.