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Finding the Fourth Proportional to 553,912.11, 830,535.36 and 216,550.95

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Solution

The fourth proportional to 553,912.11, 830,535.36 and 216,550.95 is: 324,696.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,912.11 : 830,535.36 = 216,550.95 : x
  2. Step 2: Convert to fraction form
    553,912.11/830,535.36 = 216,550.95/x
  3. Step 3: Cross multiply
    553,912.11x = 830,535.36 × 216,550.95
  4. Step 4: Simplify right side
    553,912.11x = 179,853,221,216.59
  5. Step 5: Solve for x
    x = 179,853,221,216.59/553,912.11
  6. Step 6: Final answer
    x = 324,696.32

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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.