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Finding the Fourth Proportional to 371,361.60, 557,261.10 and 134,728.20

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Solution

The fourth proportional to 371,361.60, 557,261.10 and 134,728.20 is: 202,171.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,361.60 : 557,261.10 = 134,728.20 : x
  2. Step 2: Convert to fraction form
    371,361.60/557,261.10 = 134,728.20/x
  3. Step 3: Cross multiply
    371,361.60x = 557,261.10 × 134,728.20
  4. Step 4: Simplify right side
    371,361.60x = 75,078,784,933.02
  5. Step 5: Solve for x
    x = 75,078,784,933.02/371,361.60
  6. Step 6: Final answer
    x = 202,171.64

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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.