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Finding the Fourth Proportional to 229,380.87, 316,660.66 and 143,387.69

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Solution

The fourth proportional to 229,380.87, 316,660.66 and 143,387.69 is: 197,946.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,380.87 : 316,660.66 = 143,387.69 : x
  2. Step 2: Convert to fraction form
    229,380.87/316,660.66 = 143,387.69/x
  3. Step 3: Cross multiply
    229,380.87x = 316,660.66 × 143,387.69
  4. Step 4: Simplify right side
    229,380.87x = 45,405,240,390.72
  5. Step 5: Solve for x
    x = 45,405,240,390.72/229,380.87
  6. Step 6: Final answer
    x = 197,946.93

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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.