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Finding the Fourth Proportional to 325,600.10, 487,744.05 and 219,311.90

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Solution

The fourth proportional to 325,600.10, 487,744.05 and 219,311.90 is: 328,525.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,600.10 : 487,744.05 = 219,311.90 : x
  2. Step 2: Convert to fraction form
    325,600.10/487,744.05 = 219,311.90/x
  3. Step 3: Cross multiply
    325,600.10x = 487,744.05 × 219,311.90
  4. Step 4: Simplify right side
    325,600.10x = 106,968,074,319.20
  5. Step 5: Solve for x
    x = 106,968,074,319.20/325,600.10
  6. Step 6: Final answer
    x = 328,525.93

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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.