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Finding the Fourth Proportional to 311,935.44, 430,472.20 and 168,695.48

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Solution

The fourth proportional to 311,935.44, 430,472.20 and 168,695.48 is: 232,800.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,935.44 : 430,472.20 = 168,695.48 : x
  2. Step 2: Convert to fraction form
    311,935.44/430,472.20 = 168,695.48/x
  3. Step 3: Cross multiply
    311,935.44x = 430,472.20 × 168,695.48
  4. Step 4: Simplify right side
    311,935.44x = 72,618,714,165.70
  5. Step 5: Solve for x
    x = 72,618,714,165.70/311,935.44
  6. Step 6: Final answer
    x = 232,800.46

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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.