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Finding the Fourth Proportional to 256,605.78, 384,812.88 and 88,078.26

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Solution

The fourth proportional to 256,605.78, 384,812.88 and 88,078.26 is: 132,084.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,605.78 : 384,812.88 = 88,078.26 : x
  2. Step 2: Convert to fraction form
    256,605.78/384,812.88 = 88,078.26/x
  3. Step 3: Cross multiply
    256,605.78x = 384,812.88 × 88,078.26
  4. Step 4: Simplify right side
    256,605.78x = 33,893,648,895.99
  5. Step 5: Solve for x
    x = 33,893,648,895.99/256,605.78
  6. Step 6: Final answer
    x = 132,084.51

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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.