Home / 258,721.65-388,082.57-116,400.69

Finding the Fourth Proportional to 258,721.65, 388,082.57 and 116,400.69

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Solution

The fourth proportional to 258,721.65, 388,082.57 and 116,400.69 is: 174,601.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,721.65 : 388,082.57 = 116,400.69 : x
  2. Step 2: Convert to fraction form
    258,721.65/388,082.57 = 116,400.69/x
  3. Step 3: Cross multiply
    258,721.65x = 388,082.57 × 116,400.69
  4. Step 4: Simplify right side
    258,721.65x = 45,173,078,342.97
  5. Step 5: Solve for x
    x = 45,173,078,342.97/258,721.65
  6. Step 6: Final answer
    x = 174,601.08

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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.