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Finding the Fourth Proportional to 380,252.25, 570,939.10 and 212,101.11

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Solution

The fourth proportional to 380,252.25, 570,939.10 and 212,101.11 is: 318,464.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,252.25 : 570,939.10 = 212,101.11 : x
  2. Step 2: Convert to fraction form
    380,252.25/570,939.10 = 212,101.11/x
  3. Step 3: Cross multiply
    380,252.25x = 570,939.10 × 212,101.11
  4. Step 4: Simplify right side
    380,252.25x = 121,096,816,322.15
  5. Step 5: Solve for x
    x = 121,096,816,322.15/380,252.25
  6. Step 6: Final answer
    x = 318,464.43

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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.