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Finding the Fourth Proportional to 255,777.34, 383,560.45 and 87,311.25

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Solution

The fourth proportional to 255,777.34, 383,560.45 and 87,311.25 is: 130,930.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,777.34 : 383,560.45 = 87,311.25 : x
  2. Step 2: Convert to fraction form
    255,777.34/383,560.45 = 87,311.25/x
  3. Step 3: Cross multiply
    255,777.34x = 383,560.45 × 87,311.25
  4. Step 4: Simplify right side
    255,777.34x = 33,489,141,128.54
  5. Step 5: Solve for x
    x = 33,489,141,128.54/255,777.34
  6. Step 6: Final answer
    x = 130,930.84

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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.