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Finding the Fourth Proportional to 256,914.10, 385,371.15 and 256,914.10

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Solution

The fourth proportional to 256,914.10, 385,371.15 and 256,914.10 is: 385,371.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,914.10 : 385,371.15 = 256,914.10 : x
  2. Step 2: Convert to fraction form
    256,914.10/385,371.15 = 256,914.10/x
  3. Step 3: Cross multiply
    256,914.10x = 385,371.15 × 256,914.10
  4. Step 4: Simplify right side
    256,914.10x = 99,007,282,168.22
  5. Step 5: Solve for x
    x = 99,007,282,168.22/256,914.10
  6. Step 6: Final answer
    x = 385,371.15

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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.