Home / 420,934.25-631,406.85-140,451.50

Finding the Fourth Proportional to 420,934.25, 631,406.85 and 140,451.50

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Solution

The fourth proportional to 420,934.25, 631,406.85 and 140,451.50 is: 210,679.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,934.25 : 631,406.85 = 140,451.50 : x
  2. Step 2: Convert to fraction form
    420,934.25/631,406.85 = 140,451.50/x
  3. Step 3: Cross multiply
    420,934.25x = 631,406.85 × 140,451.50
  4. Step 4: Simplify right side
    420,934.25x = 88,682,041,527.53
  5. Step 5: Solve for x
    x = 88,682,041,527.53/420,934.25
  6. Step 6: Final answer
    x = 210,679.08

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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.