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Finding the Fourth Proportional to 384,695.21, 531,027.54 and 344,337.77

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Solution

The fourth proportional to 384,695.21, 531,027.54 and 344,337.77 is: 475,318.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,695.21 : 531,027.54 = 344,337.77 : x
  2. Step 2: Convert to fraction form
    384,695.21/531,027.54 = 344,337.77/x
  3. Step 3: Cross multiply
    384,695.21x = 531,027.54 × 344,337.77
  4. Step 4: Simplify right side
    384,695.21x = 182,852,836,277.05
  5. Step 5: Solve for x
    x = 182,852,836,277.05/384,695.21
  6. Step 6: Final answer
    x = 475,318.73

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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.