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Finding the Fourth Proportional to 256,906.10, 385,359.15 and 239,410.10

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Solution

The fourth proportional to 256,906.10, 385,359.15 and 239,410.10 is: 359,115.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,906.10 : 385,359.15 = 239,410.10 : x
  2. Step 2: Convert to fraction form
    256,906.10/385,359.15 = 239,410.10/x
  3. Step 3: Cross multiply
    256,906.10x = 385,359.15 × 239,410.10
  4. Step 4: Simplify right side
    256,906.10x = 92,258,872,637.42
  5. Step 5: Solve for x
    x = 92,258,872,637.42/256,906.10
  6. Step 6: Final answer
    x = 359,115.15

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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.