Home / 378,500.67-522,313.32-217,242.21

Finding the Fourth Proportional to 378,500.67, 522,313.32 and 217,242.21

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Solution

The fourth proportional to 378,500.67, 522,313.32 and 217,242.21 is: 299,784.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,500.67 : 522,313.32 = 217,242.21 : x
  2. Step 2: Convert to fraction form
    378,500.67/522,313.32 = 217,242.21/x
  3. Step 3: Cross multiply
    378,500.67x = 522,313.32 × 217,242.21
  4. Step 4: Simplify right side
    378,500.67x = 113,468,499,949.24
  5. Step 5: Solve for x
    x = 113,468,499,949.24/378,500.67
  6. Step 6: Final answer
    x = 299,784.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.