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Finding the Fourth Proportional to 256,245.70, 384,368.55 and 252,309.10

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Solution

The fourth proportional to 256,245.70, 384,368.55 and 252,309.10 is: 378,463.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,245.70 : 384,368.55 = 252,309.10 : x
  2. Step 2: Convert to fraction form
    256,245.70/384,368.55 = 252,309.10/x
  3. Step 3: Cross multiply
    256,245.70x = 384,368.55 × 252,309.10
  4. Step 4: Simplify right side
    256,245.70x = 96,979,682,918.81
  5. Step 5: Solve for x
    x = 96,979,682,918.81/256,245.70
  6. Step 6: Final answer
    x = 378,463.65

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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.