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Finding the Fourth Proportional to 425,317.33, 638,100.55 and 125,805.88

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Solution

The fourth proportional to 425,317.33, 638,100.55 and 125,805.88 is: 188,745.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,317.33 : 638,100.55 = 125,805.88 : x
  2. Step 2: Convert to fraction form
    425,317.33/638,100.55 = 125,805.88/x
  3. Step 3: Cross multiply
    425,317.33x = 638,100.55 × 125,805.88
  4. Step 4: Simplify right side
    425,317.33x = 80,276,803,639.06
  5. Step 5: Solve for x
    x = 80,276,803,639.06/425,317.33
  6. Step 6: Final answer
    x = 188,745.67

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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.