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Finding the Fourth Proportional to 499,910.40, 750,040.56 and 144,945.72

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Solution

The fourth proportional to 499,910.40, 750,040.56 and 144,945.72 is: 217,469.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,910.40 : 750,040.56 = 144,945.72 : x
  2. Step 2: Convert to fraction form
    499,910.40/750,040.56 = 144,945.72/x
  3. Step 3: Cross multiply
    499,910.40x = 750,040.56 × 144,945.72
  4. Step 4: Simplify right side
    499,910.40x = 108,715,168,998.40
  5. Step 5: Solve for x
    x = 108,715,168,998.40/499,910.40
  6. Step 6: Final answer
    x = 217,469.31

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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.