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Finding the Fourth Proportional to 256,480.41, 384,720.62 and 69,491.91

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Solution

The fourth proportional to 256,480.41, 384,720.62 and 69,491.91 is: 104,237.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,480.41 : 384,720.62 = 69,491.91 : x
  2. Step 2: Convert to fraction form
    256,480.41/384,720.62 = 69,491.91/x
  3. Step 3: Cross multiply
    256,480.41x = 384,720.62 × 69,491.91
  4. Step 4: Simplify right side
    256,480.41x = 26,734,970,352.72
  5. Step 5: Solve for x
    x = 26,734,970,352.72/256,480.41
  6. Step 6: Final answer
    x = 104,237.87

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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.