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Finding the Fourth Proportional to 256,059.60, 384,204.60 and 89,966.80

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Solution

The fourth proportional to 256,059.60, 384,204.60 and 89,966.80 is: 134,990.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,059.60 : 384,204.60 = 89,966.80 : x
  2. Step 2: Convert to fraction form
    256,059.60/384,204.60 = 89,966.80/x
  3. Step 3: Cross multiply
    256,059.60x = 384,204.60 × 89,966.80
  4. Step 4: Simplify right side
    256,059.60x = 34,565,658,407.28
  5. Step 5: Solve for x
    x = 34,565,658,407.28/256,059.60
  6. Step 6: Final answer
    x = 134,990.68

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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.