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Finding the Fourth Proportional to 256,487.10, 384,269.85 and 219,623.10

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Solution

The fourth proportional to 256,487.10, 384,269.85 and 219,623.10 is: 329,040.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,487.10 : 384,269.85 = 219,623.10 : x
  2. Step 2: Convert to fraction form
    256,487.10/384,269.85 = 219,623.10/x
  3. Step 3: Cross multiply
    256,487.10x = 384,269.85 × 219,623.10
  4. Step 4: Simplify right side
    256,487.10x = 84,394,535,693.54
  5. Step 5: Solve for x
    x = 84,394,535,693.54/256,487.10
  6. Step 6: Final answer
    x = 329,040.08

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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.