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Finding the Fourth Proportional to 425,797.50, 638,696.36 and 173,215.41

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Solution

The fourth proportional to 425,797.50, 638,696.36 and 173,215.41 is: 259,823.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,797.50 : 638,696.36 = 173,215.41 : x
  2. Step 2: Convert to fraction form
    425,797.50/638,696.36 = 173,215.41/x
  3. Step 3: Cross multiply
    425,797.50x = 638,696.36 × 173,215.41
  4. Step 4: Simplify right side
    425,797.50x = 110,632,047,803.35
  5. Step 5: Solve for x
    x = 110,632,047,803.35/425,797.50
  6. Step 6: Final answer
    x = 259,823.15

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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.