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Finding the Fourth Proportional to 311,868.96, 430,378.92 and 168,628.92

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Solution

The fourth proportional to 311,868.96, 430,378.92 and 168,628.92 is: 232,707.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,868.96 : 430,378.92 = 168,628.92 : x
  2. Step 2: Convert to fraction form
    311,868.96/430,378.92 = 168,628.92/x
  3. Step 3: Cross multiply
    311,868.96x = 430,378.92 × 168,628.92
  4. Step 4: Simplify right side
    311,868.96x = 72,574,332,470.37
  5. Step 5: Solve for x
    x = 72,574,332,470.37/311,868.96
  6. Step 6: Final answer
    x = 232,707.78

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1.5x scale

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.