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Finding the Fourth Proportional to 661,143.39, 992,088.76 and 282,028.31

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Solution

The fourth proportional to 661,143.39, 992,088.76 and 282,028.31 is: 423,201.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,143.39 : 992,088.76 = 282,028.31 : x
  2. Step 2: Convert to fraction form
    661,143.39/992,088.76 = 282,028.31/x
  3. Step 3: Cross multiply
    661,143.39x = 992,088.76 × 282,028.31
  4. Step 4: Simplify right side
    661,143.39x = 279,797,116,352.80
  5. Step 5: Solve for x
    x = 279,797,116,352.80/661,143.39
  6. Step 6: Final answer
    x = 423,201.87

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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.