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Finding the Fourth Proportional to 397,187.15, 595,717.84 and 172,487.32

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Solution

The fourth proportional to 397,187.15, 595,717.84 and 172,487.32 is: 258,703.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,187.15 : 595,717.84 = 172,487.32 : x
  2. Step 2: Convert to fraction form
    397,187.15/595,717.84 = 172,487.32/x
  3. Step 3: Cross multiply
    397,187.15x = 595,717.84 × 172,487.32
  4. Step 4: Simplify right side
    397,187.15x = 102,753,775,775.02
  5. Step 5: Solve for x
    x = 102,753,775,775.02/397,187.15
  6. Step 6: Final answer
    x = 258,703.68

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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.