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Finding the Fourth Proportional to 482,838.26, 666,375.78 and 278,888.95

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Solution

The fourth proportional to 482,838.26, 666,375.78 and 278,888.95 is: 384,900.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,838.26 : 666,375.78 = 278,888.95 : x
  2. Step 2: Convert to fraction form
    482,838.26/666,375.78 = 278,888.95/x
  3. Step 3: Cross multiply
    482,838.26x = 666,375.78 × 278,888.95
  4. Step 4: Simplify right side
    482,838.26x = 185,844,838,946.54
  5. Step 5: Solve for x
    x = 185,844,838,946.54/482,838.26
  6. Step 6: Final answer
    x = 384,900.82

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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.