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Finding the Fourth Proportional to 425,635.77, 638,641.71 and 223,183.53

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Solution

The fourth proportional to 425,635.77, 638,641.71 and 223,183.53 is: 334,873.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,635.77 : 638,641.71 = 223,183.53 : x
  2. Step 2: Convert to fraction form
    425,635.77/638,641.71 = 223,183.53/x
  3. Step 3: Cross multiply
    425,635.77x = 638,641.71 × 223,183.53
  4. Step 4: Simplify right side
    425,635.77x = 142,534,311,243.04
  5. Step 5: Solve for x
    x = 142,534,311,243.04/425,635.77
  6. Step 6: Final answer
    x = 334,873.90

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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.