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Finding the Fourth Proportional to 343,364.20, 515,046.30 and 292,625.80

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Solution

The fourth proportional to 343,364.20, 515,046.30 and 292,625.80 is: 438,938.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,364.20 : 515,046.30 = 292,625.80 : x
  2. Step 2: Convert to fraction form
    343,364.20/515,046.30 = 292,625.80/x
  3. Step 3: Cross multiply
    343,364.20x = 515,046.30 × 292,625.80
  4. Step 4: Simplify right side
    343,364.20x = 150,715,835,574.54
  5. Step 5: Solve for x
    x = 150,715,835,574.54/343,364.20
  6. Step 6: Final answer
    x = 438,938.70

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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.