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Finding the Fourth Proportional to 402,034.50, 554,803.77 and 220,744.85

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Solution

The fourth proportional to 402,034.50, 554,803.77 and 220,744.85 is: 304,625.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,034.50 : 554,803.77 = 220,744.85 : x
  2. Step 2: Convert to fraction form
    402,034.50/554,803.77 = 220,744.85/x
  3. Step 3: Cross multiply
    402,034.50x = 554,803.77 × 220,744.85
  4. Step 4: Simplify right side
    402,034.50x = 122,470,072,214.07
  5. Step 5: Solve for x
    x = 122,470,072,214.07/402,034.50
  6. Step 6: Final answer
    x = 304,625.78

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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.