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Finding the Fourth Proportional to 323,555.40, 484,890.06 and 205,309.80

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Solution

The fourth proportional to 323,555.40, 484,890.06 and 205,309.80 is: 307,683.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,555.40 : 484,890.06 = 205,309.80 : x
  2. Step 2: Convert to fraction form
    323,555.40/484,890.06 = 205,309.80/x
  3. Step 3: Cross multiply
    323,555.40x = 484,890.06 × 205,309.80
  4. Step 4: Simplify right side
    323,555.40x = 99,552,681,240.59
  5. Step 5: Solve for x
    x = 99,552,681,240.59/323,555.40
  6. Step 6: Final answer
    x = 307,683.57

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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.