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Finding the Fourth Proportional to 296,540.80, 444,811.20 and 130,328.80

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Solution

The fourth proportional to 296,540.80, 444,811.20 and 130,328.80 is: 195,493.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,540.80 : 444,811.20 = 130,328.80 : x
  2. Step 2: Convert to fraction form
    296,540.80/444,811.20 = 130,328.80/x
  3. Step 3: Cross multiply
    296,540.80x = 444,811.20 × 130,328.80
  4. Step 4: Simplify right side
    296,540.80x = 57,971,709,922.56
  5. Step 5: Solve for x
    x = 57,971,709,922.56/296,540.80
  6. Step 6: Final answer
    x = 195,493.20

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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.