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Finding the Fourth Proportional to 661,326.75, 992,331.51 and 282,145.73

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Solution

The fourth proportional to 661,326.75, 992,331.51 and 282,145.73 is: 423,364.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,326.75 : 992,331.51 = 282,145.73 : x
  2. Step 2: Convert to fraction form
    661,326.75/992,331.51 = 282,145.73/x
  3. Step 3: Cross multiply
    661,326.75x = 992,331.51 × 282,145.73
  4. Step 4: Simplify right side
    661,326.75x = 279,982,097,853.11
  5. Step 5: Solve for x
    x = 279,982,097,853.11/661,326.75
  6. Step 6: Final answer
    x = 423,364.24

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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.