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Finding the Fourth Proportional to 255,420.56, 383,141.62 and 75,506.38

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Solution

The fourth proportional to 255,420.56, 383,141.62 and 75,506.38 is: 113,262.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,420.56 : 383,141.62 = 75,506.38 : x
  2. Step 2: Convert to fraction form
    255,420.56/383,141.62 = 75,506.38/x
  3. Step 3: Cross multiply
    255,420.56x = 383,141.62 × 75,506.38
  4. Step 4: Simplify right side
    255,420.56x = 28,929,636,753.54
  5. Step 5: Solve for x
    x = 28,929,636,753.54/255,420.56
  6. Step 6: Final answer
    x = 113,262.76

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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.