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Finding the Fourth Proportional to 200,505.60, 300,801.60 and 60,278.40

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Solution

The fourth proportional to 200,505.60, 300,801.60 and 60,278.40 is: 90,430.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,505.60 : 300,801.60 = 60,278.40 : x
  2. Step 2: Convert to fraction form
    200,505.60/300,801.60 = 60,278.40/x
  3. Step 3: Cross multiply
    200,505.60x = 300,801.60 × 60,278.40
  4. Step 4: Simplify right side
    200,505.60x = 18,131,839,165.44
  5. Step 5: Solve for x
    x = 18,131,839,165.44/200,505.60
  6. Step 6: Final answer
    x = 90,430.59

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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.