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Finding the Fourth Proportional to 553,027.22, 763,169.10 and 311,309.04

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Solution

The fourth proportional to 553,027.22, 763,169.10 and 311,309.04 is: 429,601.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,027.22 : 763,169.10 = 311,309.04 : x
  2. Step 2: Convert to fraction form
    553,027.22/763,169.10 = 311,309.04/x
  3. Step 3: Cross multiply
    553,027.22x = 763,169.10 × 311,309.04
  4. Step 4: Simplify right side
    553,027.22x = 237,581,439,878.66
  5. Step 5: Solve for x
    x = 237,581,439,878.66/553,027.22
  6. Step 6: Final answer
    x = 429,601.71

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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.