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Finding the Fourth Proportional to 196,704.40, 294,716.40 and 91,307.20

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Solution

The fourth proportional to 196,704.40, 294,716.40 and 91,307.20 is: 136,802.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,704.40 : 294,716.40 = 91,307.20 : x
  2. Step 2: Convert to fraction form
    196,704.40/294,716.40 = 91,307.20/x
  3. Step 3: Cross multiply
    196,704.40x = 294,716.40 × 91,307.20
  4. Step 4: Simplify right side
    196,704.40x = 26,909,729,278.08
  5. Step 5: Solve for x
    x = 26,909,729,278.08/196,704.40
  6. Step 6: Final answer
    x = 136,802.88

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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.