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Finding the Fourth Proportional to 256,898.56, 385,308.92 and 69,924.64

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Solution

The fourth proportional to 256,898.56, 385,308.92 and 69,924.64 is: 104,876.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,898.56 : 385,308.92 = 69,924.64 : x
  2. Step 2: Convert to fraction form
    256,898.56/385,308.92 = 69,924.64/x
  3. Step 3: Cross multiply
    256,898.56x = 385,308.92 × 69,924.64
  4. Step 4: Simplify right side
    256,898.56x = 26,942,587,519.79
  5. Step 5: Solve for x
    x = 26,942,587,519.79/256,898.56
  6. Step 6: Final answer
    x = 104,876.37

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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.