Home / 420,935.25-631,408.35-140,452.50

Finding the Fourth Proportional to 420,935.25, 631,408.35 and 140,452.50

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Solution

The fourth proportional to 420,935.25, 631,408.35 and 140,452.50 is: 210,680.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,935.25 : 631,408.35 = 140,452.50 : x
  2. Step 2: Convert to fraction form
    420,935.25/631,408.35 = 140,452.50/x
  3. Step 3: Cross multiply
    420,935.25x = 631,408.35 × 140,452.50
  4. Step 4: Simplify right side
    420,935.25x = 88,682,881,278.38
  5. Step 5: Solve for x
    x = 88,682,881,278.38/420,935.25
  6. Step 6: Final answer
    x = 210,680.58

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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.