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Finding the Fourth Proportional to 512,010.28, 767,581.62 and 212,303.80

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Solution

The fourth proportional to 512,010.28, 767,581.62 and 212,303.80 is: 318,275.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,010.28 : 767,581.62 = 212,303.80 : x
  2. Step 2: Convert to fraction form
    512,010.28/767,581.62 = 212,303.80/x
  3. Step 3: Cross multiply
    512,010.28x = 767,581.62 × 212,303.80
  4. Step 4: Simplify right side
    512,010.28x = 162,960,494,736.16
  5. Step 5: Solve for x
    x = 162,960,494,736.16/512,010.28
  6. Step 6: Final answer
    x = 318,275.83

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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.