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Finding the Fourth Proportional to 197,309.70, 295,964.55 and 72,699.30

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Solution

The fourth proportional to 197,309.70, 295,964.55 and 72,699.30 is: 109,048.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,309.70 : 295,964.55 = 72,699.30 : x
  2. Step 2: Convert to fraction form
    197,309.70/295,964.55 = 72,699.30/x
  3. Step 3: Cross multiply
    197,309.70x = 295,964.55 × 72,699.30
  4. Step 4: Simplify right side
    197,309.70x = 21,516,415,609.82
  5. Step 5: Solve for x
    x = 21,516,415,609.82/197,309.70
  6. Step 6: Final answer
    x = 109,048.95

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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.