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Finding the Fourth Proportional to 399,740.96, 551,663.88 and 230,000.96

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Solution

The fourth proportional to 399,740.96, 551,663.88 and 230,000.96 is: 317,413.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,740.96 : 551,663.88 = 230,000.96 : x
  2. Step 2: Convert to fraction form
    399,740.96/551,663.88 = 230,000.96/x
  3. Step 3: Cross multiply
    399,740.96x = 551,663.88 × 230,000.96
  4. Step 4: Simplify right side
    399,740.96x = 126,883,221,997.33
  5. Step 5: Solve for x
    x = 126,883,221,997.33/399,740.96
  6. Step 6: Final answer
    x = 317,413.61

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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.