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Finding the Fourth Proportional to 256,480.83, 384,706.67 and 69,477.75

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Solution

The fourth proportional to 256,480.83, 384,706.67 and 69,477.75 is: 104,212.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,480.83 : 384,706.67 = 69,477.75 : x
  2. Step 2: Convert to fraction form
    256,480.83/384,706.67 = 69,477.75/x
  3. Step 3: Cross multiply
    256,480.83x = 384,706.67 × 69,477.75
  4. Step 4: Simplify right side
    256,480.83x = 26,728,553,494.20
  5. Step 5: Solve for x
    x = 26,728,553,494.20/256,480.83
  6. Step 6: Final answer
    x = 104,212.68

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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.