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Finding the Fourth Proportional to 343,861.20, 516,180.60 and 265,323.60

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Solution

The fourth proportional to 343,861.20, 516,180.60 and 265,323.60 is: 398,285.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,861.20 : 516,180.60 = 265,323.60 : x
  2. Step 2: Convert to fraction form
    343,861.20/516,180.60 = 265,323.60/x
  3. Step 3: Cross multiply
    343,861.20x = 516,180.60 × 265,323.60
  4. Step 4: Simplify right side
    343,861.20x = 136,954,895,042.16
  5. Step 5: Solve for x
    x = 136,954,895,042.16/343,861.20
  6. Step 6: Final answer
    x = 398,285.40

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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.