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Finding the Fourth Proportional to 425,223.45, 637,858.44 and 172,466.37

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Solution

The fourth proportional to 425,223.45, 637,858.44 and 172,466.37 is: 258,708.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,223.45 : 637,858.44 = 172,466.37 : x
  2. Step 2: Convert to fraction form
    425,223.45/637,858.44 = 172,466.37/x
  3. Step 3: Cross multiply
    425,223.45x = 637,858.44 × 172,466.37
  4. Step 4: Simplify right side
    425,223.45x = 110,009,129,720.66
  5. Step 5: Solve for x
    x = 110,009,129,720.66/425,223.45
  6. Step 6: Final answer
    x = 258,708.99

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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.