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Finding the Fourth Proportional to 143,610.96, 215,410.95 and 38,427.20

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Solution

The fourth proportional to 143,610.96, 215,410.95 and 38,427.20 is: 57,639.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,610.96 : 215,410.95 = 38,427.20 : x
  2. Step 2: Convert to fraction form
    143,610.96/215,410.95 = 38,427.20/x
  3. Step 3: Cross multiply
    143,610.96x = 215,410.95 × 38,427.20
  4. Step 4: Simplify right side
    143,610.96x = 8,277,638,580.79
  5. Step 5: Solve for x
    x = 8,277,638,580.79/143,610.96
  6. Step 6: Final answer
    x = 57,639.32

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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.