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Finding the Fourth Proportional to 577,447.72, 866,162.04 and 172,640.86

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Solution

The fourth proportional to 577,447.72, 866,162.04 and 172,640.86 is: 258,958.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,447.72 : 866,162.04 = 172,640.86 : x
  2. Step 2: Convert to fraction form
    577,447.72/866,162.04 = 172,640.86/x
  3. Step 3: Cross multiply
    577,447.72x = 866,162.04 × 172,640.86
  4. Step 4: Simplify right side
    577,447.72x = 149,534,959,484.95
  5. Step 5: Solve for x
    x = 149,534,959,484.95/577,447.72
  6. Step 6: Final answer
    x = 258,958.44

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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.