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Finding the Fourth Proportional to 538,853.70, 743,623.41 and 297,145.86

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Solution

The fourth proportional to 538,853.70, 743,623.41 and 297,145.86 is: 410,064.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,853.70 : 743,623.41 = 297,145.86 : x
  2. Step 2: Convert to fraction form
    538,853.70/743,623.41 = 297,145.86/x
  3. Step 3: Cross multiply
    538,853.70x = 743,623.41 × 297,145.86
  4. Step 4: Simplify right side
    538,853.70x = 220,964,617,680.58
  5. Step 5: Solve for x
    x = 220,964,617,680.58/538,853.70
  6. Step 6: Final answer
    x = 410,064.21

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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.