Home / 255,635.31-383,453.91-78,141.63

Finding the Fourth Proportional to 255,635.31, 383,453.91 and 78,141.63

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Solution

The fourth proportional to 255,635.31, 383,453.91 and 78,141.63 is: 117,212.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,635.31 : 383,453.91 = 78,141.63 : x
  2. Step 2: Convert to fraction form
    255,635.31/383,453.91 = 78,141.63/x
  3. Step 3: Cross multiply
    255,635.31x = 383,453.91 × 78,141.63
  4. Step 4: Simplify right side
    255,635.31x = 29,963,713,557.27
  5. Step 5: Solve for x
    x = 29,963,713,557.27/255,635.31
  6. Step 6: Final answer
    x = 117,212.73

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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.