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Finding the Fourth Proportional to 538,665.39, 743,335.46 and 293,644.85

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Solution

The fourth proportional to 538,665.39, 743,335.46 and 293,644.85 is: 405,217.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,665.39 : 743,335.46 = 293,644.85 : x
  2. Step 2: Convert to fraction form
    538,665.39/743,335.46 = 293,644.85/x
  3. Step 3: Cross multiply
    538,665.39x = 743,335.46 × 293,644.85
  4. Step 4: Simplify right side
    538,665.39x = 218,276,626,599.99
  5. Step 5: Solve for x
    x = 218,276,626,599.99/538,665.39
  6. Step 6: Final answer
    x = 405,217.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.