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Finding the Fourth Proportional to 256,122.45, 384,183.68 and 89,888.85

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Solution

The fourth proportional to 256,122.45, 384,183.68 and 89,888.85 is: 134,833.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,122.45 : 384,183.68 = 89,888.85 : x
  2. Step 2: Convert to fraction form
    256,122.45/384,183.68 = 89,888.85/x
  3. Step 3: Cross multiply
    256,122.45x = 384,183.68 × 89,888.85
  4. Step 4: Simplify right side
    256,122.45x = 34,533,828,734.52
  5. Step 5: Solve for x
    x = 34,533,828,734.52/256,122.45
  6. Step 6: Final answer
    x = 134,833.28

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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.