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Finding the Fourth Proportional to 553,810.37, 764,259 and 299,161.56

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Solution

The fourth proportional to 553,810.37, 764,259 and 299,161.56 is: 412,843.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,810.37 : 764,259 = 299,161.56 : x
  2. Step 2: Convert to fraction form
    553,810.37/764,259 = 299,161.56/x
  3. Step 3: Cross multiply
    553,810.37x = 764,259 × 299,161.56
  4. Step 4: Simplify right side
    553,810.37x = 228,636,914,684.04
  5. Step 5: Solve for x
    x = 228,636,914,684.04/553,810.37
  6. Step 6: Final answer
    x = 412,843.33

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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.