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Finding the Fourth Proportional to 661,991.32, 992,115.42 and 262,414.27

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Solution

The fourth proportional to 661,991.32, 992,115.42 and 262,414.27 is: 393,275.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,991.32 : 992,115.42 = 262,414.27 : x
  2. Step 2: Convert to fraction form
    661,991.32/992,115.42 = 262,414.27/x
  3. Step 3: Cross multiply
    661,991.32x = 992,115.42 × 262,414.27
  4. Step 4: Simplify right side
    661,991.32x = 260,345,243,695.04
  5. Step 5: Solve for x
    x = 260,345,243,695.04/661,991.32
  6. Step 6: Final answer
    x = 393,275.92

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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.