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Finding the Fourth Proportional to 255,573.78, 383,435.82 and 75,663.78

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Solution

The fourth proportional to 255,573.78, 383,435.82 and 75,663.78 is: 113,517.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,573.78 : 383,435.82 = 75,663.78 : x
  2. Step 2: Convert to fraction form
    255,573.78/383,435.82 = 75,663.78/x
  3. Step 3: Cross multiply
    255,573.78x = 383,435.82 × 75,663.78
  4. Step 4: Simplify right side
    255,573.78x = 29,012,203,528.60
  5. Step 5: Solve for x
    x = 29,012,203,528.60/255,573.78
  6. Step 6: Final answer
    x = 113,517.92

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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.