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Finding the Fourth Proportional to 290,363.72, 399,775.03 and 247,751.24

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Solution

The fourth proportional to 290,363.72, 399,775.03 and 247,751.24 is: 341,105.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,363.72 : 399,775.03 = 247,751.24 : x
  2. Step 2: Convert to fraction form
    290,363.72/399,775.03 = 247,751.24/x
  3. Step 3: Cross multiply
    290,363.72x = 399,775.03 × 247,751.24
  4. Step 4: Simplify right side
    290,363.72x = 99,044,756,785.28
  5. Step 5: Solve for x
    x = 99,044,756,785.28/290,363.72
  6. Step 6: Final answer
    x = 341,105.83

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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.