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Finding the Fourth Proportional to 358,997.31, 538,595.76 and 156,611.12

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Solution

The fourth proportional to 358,997.31, 538,595.76 and 156,611.12 is: 234,960.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,997.31 : 538,595.76 = 156,611.12 : x
  2. Step 2: Convert to fraction form
    358,997.31/538,595.76 = 156,611.12/x
  3. Step 3: Cross multiply
    358,997.31x = 538,595.76 × 156,611.12
  4. Step 4: Simplify right side
    358,997.31x = 84,350,082,507.87
  5. Step 5: Solve for x
    x = 84,350,082,507.87/358,997.31
  6. Step 6: Final answer
    x = 234,960.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.