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Finding the Fourth Proportional to 343,894.80, 515,842.20 and 265,162.80

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Solution

The fourth proportional to 343,894.80, 515,842.20 and 265,162.80 is: 397,744.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,894.80 : 515,842.20 = 265,162.80 : x
  2. Step 2: Convert to fraction form
    343,894.80/515,842.20 = 265,162.80/x
  3. Step 3: Cross multiply
    343,894.80x = 515,842.20 × 265,162.80
  4. Step 4: Simplify right side
    343,894.80x = 136,782,162,110.16
  5. Step 5: Solve for x
    x = 136,782,162,110.16/343,894.80
  6. Step 6: Final answer
    x = 397,744.20

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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.