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Finding the Fourth Proportional to 256,448.10, 384,672.15 and 256,448.10

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Solution

The fourth proportional to 256,448.10, 384,672.15 and 256,448.10 is: 384,672.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,448.10 : 384,672.15 = 256,448.10 : x
  2. Step 2: Convert to fraction form
    256,448.10/384,672.15 = 256,448.10/x
  3. Step 3: Cross multiply
    256,448.10x = 384,672.15 × 256,448.10
  4. Step 4: Simplify right side
    256,448.10x = 98,648,441,990.42
  5. Step 5: Solve for x
    x = 98,648,441,990.42/256,448.10
  6. Step 6: Final answer
    x = 384,672.15

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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.