Home / 320,436.20-480,135.90-201,895.40

Finding the Fourth Proportional to 320,436.20, 480,135.90 and 201,895.40

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Solution

The fourth proportional to 320,436.20, 480,135.90 and 201,895.40 is: 302,516.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,436.20 : 480,135.90 = 201,895.40 : x
  2. Step 2: Convert to fraction form
    320,436.20/480,135.90 = 201,895.40/x
  3. Step 3: Cross multiply
    320,436.20x = 480,135.90 × 201,895.40
  4. Step 4: Simplify right side
    320,436.20x = 96,937,229,584.86
  5. Step 5: Solve for x
    x = 96,937,229,584.86/320,436.20
  6. Step 6: Final answer
    x = 302,516.47

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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.