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Finding the Fourth Proportional to 482,388.43, 665,607.98 and 278,364.90

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Solution

The fourth proportional to 482,388.43, 665,607.98 and 278,364.90 is: 384,092.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,388.43 : 665,607.98 = 278,364.90 : x
  2. Step 2: Convert to fraction form
    482,388.43/665,607.98 = 278,364.90/x
  3. Step 3: Cross multiply
    482,388.43x = 665,607.98 × 278,364.90
  4. Step 4: Simplify right side
    482,388.43x = 185,281,901,983.84
  5. Step 5: Solve for x
    x = 185,281,901,983.84/482,388.43
  6. Step 6: Final answer
    x = 384,092.76

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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.