Home / 320,518.38-480,941.60-131,118.71

Finding the Fourth Proportional to 320,518.38, 480,941.60 and 131,118.71

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Solution

The fourth proportional to 320,518.38, 480,941.60 and 131,118.71 is: 196,745.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,518.38 : 480,941.60 = 131,118.71 : x
  2. Step 2: Convert to fraction form
    320,518.38/480,941.60 = 131,118.71/x
  3. Step 3: Cross multiply
    320,518.38x = 480,941.60 × 131,118.71
  4. Step 4: Simplify right side
    320,518.38x = 63,060,443,379.69
  5. Step 5: Solve for x
    x = 63,060,443,379.69/320,518.38
  6. Step 6: Final answer
    x = 196,745.17

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1.5x scale

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.