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Finding the Fourth Proportional to 661,644.51, 992,472.75 and 188,329.65

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Solution

The fourth proportional to 661,644.51, 992,472.75 and 188,329.65 is: 282,496.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,644.51 : 992,472.75 = 188,329.65 : x
  2. Step 2: Convert to fraction form
    661,644.51/992,472.75 = 188,329.65/x
  3. Step 3: Cross multiply
    661,644.51x = 992,472.75 × 188,329.65
  4. Step 4: Simplify right side
    661,644.51x = 186,912,045,642.04
  5. Step 5: Solve for x
    x = 186,912,045,642.04/661,644.51
  6. Step 6: Final answer
    x = 282,496.18

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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.