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Finding the Fourth Proportional to 291,751.62, 402,727.92 and 196,313.67

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Solution

The fourth proportional to 291,751.62, 402,727.92 and 196,313.67 is: 270,987.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,751.62 : 402,727.92 = 196,313.67 : x
  2. Step 2: Convert to fraction form
    291,751.62/402,727.92 = 196,313.67/x
  3. Step 3: Cross multiply
    291,751.62x = 402,727.92 × 196,313.67
  4. Step 4: Simplify right side
    291,751.62x = 79,060,995,986.67
  5. Step 5: Solve for x
    x = 79,060,995,986.67/291,751.62
  6. Step 6: Final answer
    x = 270,987.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.