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Finding the Fourth Proportional to 518,930.82, 716,108.31 and 304,213.91

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Solution

The fourth proportional to 518,930.82, 716,108.31 and 304,213.91 is: 419,805.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,930.82 : 716,108.31 = 304,213.91 : x
  2. Step 2: Convert to fraction form
    518,930.82/716,108.31 = 304,213.91/x
  3. Step 3: Cross multiply
    518,930.82x = 716,108.31 × 304,213.91
  4. Step 4: Simplify right side
    518,930.82x = 217,850,105,388.05
  5. Step 5: Solve for x
    x = 217,850,105,388.05/518,930.82
  6. Step 6: Final answer
    x = 419,805.68

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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.