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Finding the Fourth Proportional to 225,872.79, 311,761.18 and 153,398.34

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Solution

The fourth proportional to 225,872.79, 311,761.18 and 153,398.34 is: 211,728.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,872.79 : 311,761.18 = 153,398.34 : x
  2. Step 2: Convert to fraction form
    225,872.79/311,761.18 = 153,398.34/x
  3. Step 3: Cross multiply
    225,872.79x = 311,761.18 × 153,398.34
  4. Step 4: Simplify right side
    225,872.79x = 47,823,648,564.00
  5. Step 5: Solve for x
    x = 47,823,648,564.00/225,872.79
  6. Step 6: Final answer
    x = 211,728.24

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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.