Home / 311,908.28-430,434.45-168,669.36

Finding the Fourth Proportional to 311,908.28, 430,434.45 and 168,669.36

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Solution

The fourth proportional to 311,908.28, 430,434.45 and 168,669.36 is: 232,764.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,908.28 : 430,434.45 = 168,669.36 : x
  2. Step 2: Convert to fraction form
    311,908.28/430,434.45 = 168,669.36/x
  3. Step 3: Cross multiply
    311,908.28x = 430,434.45 × 168,669.36
  4. Step 4: Simplify right side
    311,908.28x = 72,601,103,203.45
  5. Step 5: Solve for x
    x = 72,601,103,203.45/311,908.28
  6. Step 6: Final answer
    x = 232,764.27

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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.