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Finding the Fourth Proportional to 425,806.69, 638,710.13 and 173,224.59

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Solution

The fourth proportional to 425,806.69, 638,710.13 and 173,224.59 is: 259,836.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,806.69 : 638,710.13 = 173,224.59 : x
  2. Step 2: Convert to fraction form
    425,806.69/638,710.13 = 173,224.59/x
  3. Step 3: Cross multiply
    425,806.69x = 638,710.13 × 173,224.59
  4. Step 4: Simplify right side
    425,806.69x = 110,640,300,398.10
  5. Step 5: Solve for x
    x = 110,640,300,398.10/425,806.69
  6. Step 6: Final answer
    x = 259,836.92

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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.