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Finding the Fourth Proportional to 482,801.76, 666,112.26 and 278,825.76

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Solution

The fourth proportional to 482,801.76, 666,112.26 and 278,825.76 is: 384,690.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,801.76 : 666,112.26 = 278,825.76 : x
  2. Step 2: Convert to fraction form
    482,801.76/666,112.26 = 278,825.76/x
  3. Step 3: Cross multiply
    482,801.76x = 666,112.26 × 278,825.76
  4. Step 4: Simplify right side
    482,801.76x = 185,729,257,139.82
  5. Step 5: Solve for x
    x = 185,729,257,139.82/482,801.76
  6. Step 6: Final answer
    x = 384,690.51

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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.