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Finding the Fourth Proportional to 378,025.20, 567,037.80 and 141,318.90

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Solution

The fourth proportional to 378,025.20, 567,037.80 and 141,318.90 is: 211,978.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,025.20 : 567,037.80 = 141,318.90 : x
  2. Step 2: Convert to fraction form
    378,025.20/567,037.80 = 141,318.90/x
  3. Step 3: Cross multiply
    378,025.20x = 567,037.80 × 141,318.90
  4. Step 4: Simplify right side
    378,025.20x = 80,133,158,154.42
  5. Step 5: Solve for x
    x = 80,133,158,154.42/378,025.20
  6. Step 6: Final answer
    x = 211,978.35

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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.