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Finding the Fourth Proportional to 386,591.10, 534,006.72 and 322,270.44

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Solution

The fourth proportional to 386,591.10, 534,006.72 and 322,270.44 is: 445,159.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,591.10 : 534,006.72 = 322,270.44 : x
  2. Step 2: Convert to fraction form
    386,591.10/534,006.72 = 322,270.44/x
  3. Step 3: Cross multiply
    386,591.10x = 534,006.72 × 322,270.44
  4. Step 4: Simplify right side
    386,591.10x = 172,094,580,617.36
  5. Step 5: Solve for x
    x = 172,094,580,617.36/386,591.10
  6. Step 6: Final answer
    x = 445,159.19

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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.