Home / 143,438.88-215,158.32-38,258.28

Finding the Fourth Proportional to 143,438.88, 215,158.32 and 38,258.28

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Solution

The fourth proportional to 143,438.88, 215,158.32 and 38,258.28 is: 57,387.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,438.88 : 215,158.32 = 38,258.28 : x
  2. Step 2: Convert to fraction form
    143,438.88/215,158.32 = 38,258.28/x
  3. Step 3: Cross multiply
    143,438.88x = 215,158.32 × 38,258.28
  4. Step 4: Simplify right side
    143,438.88x = 8,231,587,250.89
  5. Step 5: Solve for x
    x = 8,231,587,250.89/143,438.88
  6. Step 6: Final answer
    x = 57,387.42

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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.