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Finding the Fourth Proportional to 400,620.87, 552,909.45 and 228,499.38

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Solution

The fourth proportional to 400,620.87, 552,909.45 and 228,499.38 is: 315,359.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,620.87 : 552,909.45 = 228,499.38 : x
  2. Step 2: Convert to fraction form
    400,620.87/552,909.45 = 228,499.38/x
  3. Step 3: Cross multiply
    400,620.87x = 552,909.45 × 228,499.38
  4. Step 4: Simplify right side
    400,620.87x = 126,339,466,521.14
  5. Step 5: Solve for x
    x = 126,339,466,521.14/400,620.87
  6. Step 6: Final answer
    x = 315,359.17

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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.