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Finding the Fourth Proportional to 499,999.86, 750,004.65 and 126,022.86

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Solution

The fourth proportional to 499,999.86, 750,004.65 and 126,022.86 is: 189,035.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,999.86 : 750,004.65 = 126,022.86 : x
  2. Step 2: Convert to fraction form
    499,999.86/750,004.65 = 126,022.86/x
  3. Step 3: Cross multiply
    499,999.86x = 750,004.65 × 126,022.86
  4. Step 4: Simplify right side
    499,999.86x = 94,517,731,006.30
  5. Step 5: Solve for x
    x = 94,517,731,006.30/499,999.86
  6. Step 6: Final answer
    x = 189,035.51

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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.