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Finding the Fourth Proportional to 436,550.72, 654,761.28 and 120,974.72

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Solution

The fourth proportional to 436,550.72, 654,761.28 and 120,974.72 is: 181,444.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,550.72 : 654,761.28 = 120,974.72 : x
  2. Step 2: Convert to fraction form
    436,550.72/654,761.28 = 120,974.72/x
  3. Step 3: Cross multiply
    436,550.72x = 654,761.28 × 120,974.72
  4. Step 4: Simplify right side
    436,550.72x = 79,209,562,514.84
  5. Step 5: Solve for x
    x = 79,209,562,514.84/436,550.72
  6. Step 6: Final answer
    x = 181,444.12

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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.