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Finding the Fourth Proportional to 256,098.40, 384,147.60 and 89,886.40

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Solution

The fourth proportional to 256,098.40, 384,147.60 and 89,886.40 is: 134,829.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,098.40 : 384,147.60 = 89,886.40 : x
  2. Step 2: Convert to fraction form
    256,098.40/384,147.60 = 89,886.40/x
  3. Step 3: Cross multiply
    256,098.40x = 384,147.60 × 89,886.40
  4. Step 4: Simplify right side
    256,098.40x = 34,529,644,832.64
  5. Step 5: Solve for x
    x = 34,529,644,832.64/256,098.40
  6. Step 6: Final answer
    x = 134,829.60

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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.