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Finding the Fourth Proportional to 143,988.74, 215,968.52 and 38,818.34

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Solution

The fourth proportional to 143,988.74, 215,968.52 and 38,818.34 is: 58,223.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,988.74 : 215,968.52 = 38,818.34 : x
  2. Step 2: Convert to fraction form
    143,988.74/215,968.52 = 38,818.34/x
  3. Step 3: Cross multiply
    143,988.74x = 215,968.52 × 38,818.34
  4. Step 4: Simplify right side
    143,988.74x = 8,383,538,358.81
  5. Step 5: Solve for x
    x = 8,383,538,358.81/143,988.74
  6. Step 6: Final answer
    x = 58,223.57

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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.