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Finding the Fourth Proportional to 255,675.35, 383,512.93 and 78,182.35

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Solution

The fourth proportional to 255,675.35, 383,512.93 and 78,182.35 is: 117,273.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,675.35 : 383,512.93 = 78,182.35 : x
  2. Step 2: Convert to fraction form
    255,675.35/383,512.93 = 78,182.35/x
  3. Step 3: Cross multiply
    255,675.35x = 383,512.93 × 78,182.35
  4. Step 4: Simplify right side
    255,675.35x = 29,983,942,122.79
  5. Step 5: Solve for x
    x = 29,983,942,122.79/255,675.35
  6. Step 6: Final answer
    x = 117,273.50

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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.