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Finding the Fourth Proportional to 320,510.44, 480,588.16 and 131,103.82

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Solution

The fourth proportional to 320,510.44, 480,588.16 and 131,103.82 is: 196,583.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,510.44 : 480,588.16 = 131,103.82 : x
  2. Step 2: Convert to fraction form
    320,510.44/480,588.16 = 131,103.82/x
  3. Step 3: Cross multiply
    320,510.44x = 480,588.16 × 131,103.82
  4. Step 4: Simplify right side
    320,510.44x = 63,006,941,806.99
  5. Step 5: Solve for x
    x = 63,006,941,806.99/320,510.44
  6. Step 6: Final answer
    x = 196,583.12

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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.