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Finding the Fourth Proportional to 195,419.20, 293,128.80 and 153,428.80

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Solution

The fourth proportional to 195,419.20, 293,128.80 and 153,428.80 is: 230,143.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    195,419.20 : 293,128.80 = 153,428.80 : x
  2. Step 2: Convert to fraction form
    195,419.20/293,128.80 = 153,428.80/x
  3. Step 3: Cross multiply
    195,419.20x = 293,128.80 × 153,428.80
  4. Step 4: Simplify right side
    195,419.20x = 44,974,400,029.44
  5. Step 5: Solve for x
    x = 44,974,400,029.44/195,419.20
  6. Step 6: Final answer
    x = 230,143.20

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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.