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Finding the Fourth Proportional to 518,714.21, 715,939.83 and 337,110.59

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Solution

The fourth proportional to 518,714.21, 715,939.83 and 337,110.59 is: 465,286.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,714.21 : 715,939.83 = 337,110.59 : x
  2. Step 2: Convert to fraction form
    518,714.21/715,939.83 = 337,110.59/x
  3. Step 3: Cross multiply
    518,714.21x = 715,939.83 × 337,110.59
  4. Step 4: Simplify right side
    518,714.21x = 241,350,894,916.10
  5. Step 5: Solve for x
    x = 241,350,894,916.10/518,714.21
  6. Step 6: Final answer
    x = 465,286.84

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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.