Home / 420,935.28-631,408.38-140,452.53

Finding the Fourth Proportional to 420,935.28, 631,408.38 and 140,452.53

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Solution

The fourth proportional to 420,935.28, 631,408.38 and 140,452.53 is: 210,680.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,935.28 : 631,408.38 = 140,452.53 : x
  2. Step 2: Convert to fraction form
    420,935.28/631,408.38 = 140,452.53/x
  3. Step 3: Cross multiply
    420,935.28x = 631,408.38 × 140,452.53
  4. Step 4: Simplify right side
    420,935.28x = 88,682,905,881.44
  5. Step 5: Solve for x
    x = 88,682,905,881.44/420,935.28
  6. Step 6: Final answer
    x = 210,680.62

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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.