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Finding the Fourth Proportional to 485,227.71, 727,976.58 and 211,697.85

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Solution

The fourth proportional to 485,227.71, 727,976.58 and 211,697.85 is: 317,605.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,227.71 : 727,976.58 = 211,697.85 : x
  2. Step 2: Convert to fraction form
    485,227.71/727,976.58 = 211,697.85/x
  3. Step 3: Cross multiply
    485,227.71x = 727,976.58 × 211,697.85
  4. Step 4: Simplify right side
    485,227.71x = 154,111,075,803.02
  5. Step 5: Solve for x
    x = 154,111,075,803.02/485,227.71
  6. Step 6: Final answer
    x = 317,605.68

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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.