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Finding the Fourth Proportional to 275,123.86, 412,745.18 and 85,580.62

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Solution

The fourth proportional to 275,123.86, 412,745.18 and 85,580.62 is: 128,389.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,123.86 : 412,745.18 = 85,580.62 : x
  2. Step 2: Convert to fraction form
    275,123.86/412,745.18 = 85,580.62/x
  3. Step 3: Cross multiply
    275,123.86x = 412,745.18 × 85,580.62
  4. Step 4: Simplify right side
    275,123.86x = 35,322,988,406.41
  5. Step 5: Solve for x
    x = 35,322,988,406.41/275,123.86
  6. Step 6: Final answer
    x = 128,389.40

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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.