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Finding the Fourth Proportional to 369,212.80, 553,819.20 and 201,251.20

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Solution

The fourth proportional to 369,212.80, 553,819.20 and 201,251.20 is: 301,876.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,212.80 : 553,819.20 = 201,251.20 : x
  2. Step 2: Convert to fraction form
    369,212.80/553,819.20 = 201,251.20/x
  3. Step 3: Cross multiply
    369,212.80x = 553,819.20 × 201,251.20
  4. Step 4: Simplify right side
    369,212.80x = 111,456,778,583.04
  5. Step 5: Solve for x
    x = 111,456,778,583.04/369,212.80
  6. Step 6: Final answer
    x = 301,876.80

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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.