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Finding the Fourth Proportional to 384,227.99, 530,242.96 and 212,145.38

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Solution

The fourth proportional to 384,227.99, 530,242.96 and 212,145.38 is: 292,765.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,227.99 : 530,242.96 = 212,145.38 : x
  2. Step 2: Convert to fraction form
    384,227.99/530,242.96 = 212,145.38/x
  3. Step 3: Cross multiply
    384,227.99x = 530,242.96 × 212,145.38
  4. Step 4: Simplify right side
    384,227.99x = 112,488,591,590.31
  5. Step 5: Solve for x
    x = 112,488,591,590.31/384,227.99
  6. Step 6: Final answer
    x = 292,765.22

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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.