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Finding the Fourth Proportional to 518,531.32, 715,731.37 and 300,795.02

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Solution

The fourth proportional to 518,531.32, 715,731.37 and 300,795.02 is: 415,188.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,531.32 : 715,731.37 = 300,795.02 : x
  2. Step 2: Convert to fraction form
    518,531.32/715,731.37 = 300,795.02/x
  3. Step 3: Cross multiply
    518,531.32x = 715,731.37 × 300,795.02
  4. Step 4: Simplify right side
    518,531.32x = 215,288,427,423.13
  5. Step 5: Solve for x
    x = 215,288,427,423.13/518,531.32
  6. Step 6: Final answer
    x = 415,188.86

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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.