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Finding the Fourth Proportional to 256,006.60, 384,125.10 and 89,913.80

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Solution

The fourth proportional to 256,006.60, 384,125.10 and 89,913.80 is: 134,911.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,006.60 : 384,125.10 = 89,913.80 : x
  2. Step 2: Convert to fraction form
    256,006.60/384,125.10 = 89,913.80/x
  3. Step 3: Cross multiply
    256,006.60x = 384,125.10 × 89,913.80
  4. Step 4: Simplify right side
    256,006.60x = 34,538,147,416.38
  5. Step 5: Solve for x
    x = 34,538,147,416.38/256,006.60
  6. Step 6: Final answer
    x = 134,911.16

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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.