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Finding the Fourth Proportional to 419,003.55, 628,508.51 and 119,483.87

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Solution

The fourth proportional to 419,003.55, 628,508.51 and 119,483.87 is: 179,226.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,003.55 : 628,508.51 = 119,483.87 : x
  2. Step 2: Convert to fraction form
    419,003.55/628,508.51 = 119,483.87/x
  3. Step 3: Cross multiply
    419,003.55x = 628,508.51 × 119,483.87
  4. Step 4: Simplify right side
    419,003.55x = 75,096,630,972.71
  5. Step 5: Solve for x
    x = 75,096,630,972.71/419,003.55
  6. Step 6: Final answer
    x = 179,226.72

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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.