Home / 255,731.88-383,583.85-78,238.91

Finding the Fourth Proportional to 255,731.88, 383,583.85 and 78,238.91

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Solution

The fourth proportional to 255,731.88, 383,583.85 and 78,238.91 is: 117,354.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,731.88 : 383,583.85 = 78,238.91 : x
  2. Step 2: Convert to fraction form
    255,731.88/383,583.85 = 78,238.91/x
  3. Step 3: Cross multiply
    255,731.88x = 383,583.85 × 78,238.91
  4. Step 4: Simplify right side
    255,731.88x = 30,011,183,521.06
  5. Step 5: Solve for x
    x = 30,011,183,521.06/255,731.88
  6. Step 6: Final answer
    x = 117,354.09

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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.