Home / 143,439.29-215,153.42-38,257.34

Finding the Fourth Proportional to 143,439.29, 215,153.42 and 38,257.34

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Solution

The fourth proportional to 143,439.29, 215,153.42 and 38,257.34 is: 57,384.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,439.29 : 215,153.42 = 38,257.34 : x
  2. Step 2: Convert to fraction form
    143,439.29/215,153.42 = 38,257.34/x
  3. Step 3: Cross multiply
    143,439.29x = 215,153.42 × 38,257.34
  4. Step 4: Simplify right side
    143,439.29x = 8,231,196,274.05
  5. Step 5: Solve for x
    x = 8,231,196,274.05/143,439.29
  6. Step 6: Final answer
    x = 57,384.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.