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Finding the Fourth Proportional to 513,251.33, 708,313.76 and 309,367.04

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Solution

The fourth proportional to 513,251.33, 708,313.76 and 309,367.04 is: 426,942.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,251.33 : 708,313.76 = 309,367.04 : x
  2. Step 2: Convert to fraction form
    513,251.33/708,313.76 = 309,367.04/x
  3. Step 3: Cross multiply
    513,251.33x = 708,313.76 × 309,367.04
  4. Step 4: Simplify right side
    513,251.33x = 219,128,926,234.07
  5. Step 5: Solve for x
    x = 219,128,926,234.07/513,251.33
  6. Step 6: Final answer
    x = 426,942.74

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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.