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Finding the Fourth Proportional to 254,401.40, 381,645.30 and 136,040.60

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Solution

The fourth proportional to 254,401.40, 381,645.30 and 136,040.60 is: 204,084.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,401.40 : 381,645.30 = 136,040.60 : x
  2. Step 2: Convert to fraction form
    254,401.40/381,645.30 = 136,040.60/x
  3. Step 3: Cross multiply
    254,401.40x = 381,645.30 × 136,040.60
  4. Step 4: Simplify right side
    254,401.40x = 51,919,255,599.18
  5. Step 5: Solve for x
    x = 51,919,255,599.18/254,401.40
  6. Step 6: Final answer
    x = 204,084.00

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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.