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Finding the Fourth Proportional to 320,510.95, 480,588.91 and 131,104.32

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Solution

The fourth proportional to 320,510.95, 480,588.91 and 131,104.32 is: 196,583.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,510.95 : 480,588.91 = 131,104.32 : x
  2. Step 2: Convert to fraction form
    320,510.95/480,588.91 = 131,104.32/x
  3. Step 3: Cross multiply
    320,510.95x = 480,588.91 × 131,104.32
  4. Step 4: Simplify right side
    320,510.95x = 63,007,279,842.15
  5. Step 5: Solve for x
    x = 63,007,279,842.15/320,510.95
  6. Step 6: Final answer
    x = 196,583.86

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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.