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Finding the Fourth Proportional to 245,170.58, 367,728.53 and 85,218.87

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Solution

The fourth proportional to 245,170.58, 367,728.53 and 85,218.87 is: 127,818.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,170.58 : 367,728.53 = 85,218.87 : x
  2. Step 2: Convert to fraction form
    245,170.58/367,728.53 = 85,218.87/x
  3. Step 3: Cross multiply
    245,170.58x = 367,728.53 × 85,218.87
  4. Step 4: Simplify right side
    245,170.58x = 31,337,409,367.27
  5. Step 5: Solve for x
    x = 31,337,409,367.27/245,170.58
  6. Step 6: Final answer
    x = 127,818.80

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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.