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Finding the Fourth Proportional to 366,940.80, 550,281.60 and 130,291.20

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Solution

The fourth proportional to 366,940.80, 550,281.60 and 130,291.20 is: 195,390.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,940.80 : 550,281.60 = 130,291.20 : x
  2. Step 2: Convert to fraction form
    366,940.80/550,281.60 = 130,291.20/x
  3. Step 3: Cross multiply
    366,940.80x = 550,281.60 × 130,291.20
  4. Step 4: Simplify right side
    366,940.80x = 71,696,850,001.92
  5. Step 5: Solve for x
    x = 71,696,850,001.92/366,940.80
  6. Step 6: Final answer
    x = 195,390.78

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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.