Home / 143,630.40-215,456.40-38,447.04

Finding the Fourth Proportional to 143,630.40, 215,456.40 and 38,447.04

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Solution

The fourth proportional to 143,630.40, 215,456.40 and 38,447.04 is: 57,673.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,630.40 : 215,456.40 = 38,447.04 : x
  2. Step 2: Convert to fraction form
    143,630.40/215,456.40 = 38,447.04/x
  3. Step 3: Cross multiply
    143,630.40x = 215,456.40 × 38,447.04
  4. Step 4: Simplify right side
    143,630.40x = 8,283,660,829.06
  5. Step 5: Solve for x
    x = 8,283,660,829.06/143,630.40
  6. Step 6: Final answer
    x = 57,673.45

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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.