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Finding the Fourth Proportional to 291,442.65, 402,191.69 and 168,958.90

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Solution

The fourth proportional to 291,442.65, 402,191.69 and 168,958.90 is: 233,163.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,442.65 : 402,191.69 = 168,958.90 : x
  2. Step 2: Convert to fraction form
    291,442.65/402,191.69 = 168,958.90/x
  3. Step 3: Cross multiply
    291,442.65x = 402,191.69 × 168,958.90
  4. Step 4: Simplify right side
    291,442.65x = 67,953,865,531.54
  5. Step 5: Solve for x
    x = 67,953,865,531.54/291,442.65
  6. Step 6: Final answer
    x = 233,163.76

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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.