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Finding the Fourth Proportional to 143,620.88, 215,431.31 and 38,437.11

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Solution

The fourth proportional to 143,620.88, 215,431.31 and 38,437.11 is: 57,655.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,620.88 : 215,431.31 = 38,437.11 : x
  2. Step 2: Convert to fraction form
    143,620.88/215,431.31 = 38,437.11/x
  3. Step 3: Cross multiply
    143,620.88x = 215,431.31 × 38,437.11
  4. Step 4: Simplify right side
    143,620.88x = 8,280,557,056.01
  5. Step 5: Solve for x
    x = 8,280,557,056.01/143,620.88
  6. Step 6: Final answer
    x = 57,655.67

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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.