Home / 320,420.27-480,735.63-131,039.91

Finding the Fourth Proportional to 320,420.27, 480,735.63 and 131,039.91

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Solution

The fourth proportional to 320,420.27, 480,735.63 and 131,039.91 is: 196,602.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,420.27 : 480,735.63 = 131,039.91 : x
  2. Step 2: Convert to fraction form
    320,420.27/480,735.63 = 131,039.91/x
  3. Step 3: Cross multiply
    320,420.27x = 480,735.63 × 131,039.91
  4. Step 4: Simplify right side
    320,420.27x = 62,995,553,688.99
  5. Step 5: Solve for x
    x = 62,995,553,688.99/320,420.27
  6. Step 6: Final answer
    x = 196,602.90

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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.