Home / 255,729.98-383,610.33-78,238.52

Finding the Fourth Proportional to 255,729.98, 383,610.33 and 78,238.52

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Solution

The fourth proportional to 255,729.98, 383,610.33 and 78,238.52 is: 117,362.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,729.98 : 383,610.33 = 78,238.52 : x
  2. Step 2: Convert to fraction form
    255,729.98/383,610.33 = 78,238.52/x
  3. Step 3: Cross multiply
    255,729.98x = 383,610.33 × 78,238.52
  4. Step 4: Simplify right side
    255,729.98x = 30,013,104,475.91
  5. Step 5: Solve for x
    x = 30,013,104,475.91/255,729.98
  6. Step 6: Final answer
    x = 117,362.48

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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.