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Finding the Fourth Proportional to 200,880.20, 301,320.30 and 51,120.20

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Solution

The fourth proportional to 200,880.20, 301,320.30 and 51,120.20 is: 76,680.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,880.20 : 301,320.30 = 51,120.20 : x
  2. Step 2: Convert to fraction form
    200,880.20/301,320.30 = 51,120.20/x
  3. Step 3: Cross multiply
    200,880.20x = 301,320.30 × 51,120.20
  4. Step 4: Simplify right side
    200,880.20x = 15,403,554,000.06
  5. Step 5: Solve for x
    x = 15,403,554,000.06/200,880.20
  6. Step 6: Final answer
    x = 76,680.30

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1.5x scale

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.