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Finding the Fourth Proportional to 425,120.90, 637,662.90 and 158,883.72

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Solution

The fourth proportional to 425,120.90, 637,662.90 and 158,883.72 is: 238,318.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,120.90 : 637,662.90 = 158,883.72 : x
  2. Step 2: Convert to fraction form
    425,120.90/637,662.90 = 158,883.72/x
  3. Step 3: Cross multiply
    425,120.90x = 637,662.90 × 158,883.72
  4. Step 4: Simplify right side
    425,120.90x = 101,314,253,657.99
  5. Step 5: Solve for x
    x = 101,314,253,657.99/425,120.90
  6. Step 6: Final answer
    x = 238,318.68

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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.