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Finding the Fourth Proportional to 512,125.96, 707,016.89 and 308,226.94

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Solution

The fourth proportional to 512,125.96, 707,016.89 and 308,226.94 is: 425,523.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,125.96 : 707,016.89 = 308,226.94 : x
  2. Step 2: Convert to fraction form
    512,125.96/707,016.89 = 308,226.94/x
  3. Step 3: Cross multiply
    512,125.96x = 707,016.89 × 308,226.94
  4. Step 4: Simplify right side
    512,125.96x = 217,921,652,533.02
  5. Step 5: Solve for x
    x = 217,921,652,533.02/512,125.96
  6. Step 6: Final answer
    x = 425,523.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.