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Finding the Fourth Proportional to 661,639.59, 992,465.49 and 188,324.82

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Solution

The fourth proportional to 661,639.59, 992,465.49 and 188,324.82 is: 282,488.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,639.59 : 992,465.49 = 188,324.82 : x
  2. Step 2: Convert to fraction form
    661,639.59/992,465.49 = 188,324.82/x
  3. Step 3: Cross multiply
    661,639.59x = 992,465.49 × 188,324.82
  4. Step 4: Simplify right side
    661,639.59x = 186,905,883,818.84
  5. Step 5: Solve for x
    x = 186,905,883,818.84/661,639.59
  6. Step 6: Final answer
    x = 282,488.97

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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.