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Finding the Fourth Proportional to 143,537.68, 215,289.80 and 38,364.88

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Solution

The fourth proportional to 143,537.68, 215,289.80 and 38,364.88 is: 57,542.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,537.68 : 215,289.80 = 38,364.88 : x
  2. Step 2: Convert to fraction form
    143,537.68/215,289.80 = 38,364.88/x
  3. Step 3: Cross multiply
    143,537.68x = 215,289.80 × 38,364.88
  4. Step 4: Simplify right side
    143,537.68x = 8,259,567,342.22
  5. Step 5: Solve for x
    x = 8,259,567,342.22/143,537.68
  6. Step 6: Final answer
    x = 57,542.85

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1.5x scale

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.