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Finding the Fourth Proportional to 251,587.81, 377,339.34 and 71,660.58

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Solution

The fourth proportional to 251,587.81, 377,339.34 and 71,660.58 is: 107,478.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,587.81 : 377,339.34 = 71,660.58 : x
  2. Step 2: Convert to fraction form
    251,587.81/377,339.34 = 71,660.58/x
  3. Step 3: Cross multiply
    251,587.81x = 377,339.34 × 71,660.58
  4. Step 4: Simplify right side
    251,587.81x = 27,040,357,595.63
  5. Step 5: Solve for x
    x = 27,040,357,595.63/251,587.81
  6. Step 6: Final answer
    x = 107,478.81

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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.