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Finding the Fourth Proportional to 262,458.78, 393,750.69 and 84,965.79

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Solution

The fourth proportional to 262,458.78, 393,750.69 and 84,965.79 is: 127,468.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,458.78 : 393,750.69 = 84,965.79 : x
  2. Step 2: Convert to fraction form
    262,458.78/393,750.69 = 84,965.79/x
  3. Step 3: Cross multiply
    262,458.78x = 393,750.69 × 84,965.79
  4. Step 4: Simplify right side
    262,458.78x = 33,455,338,438.90
  5. Step 5: Solve for x
    x = 33,455,338,438.90/262,458.78
  6. Step 6: Final answer
    x = 127,468.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.