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Finding the Fourth Proportional to 348,145.80, 521,181.90 and 207,832.20

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Solution

The fourth proportional to 348,145.80, 521,181.90 and 207,832.20 is: 311,129.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,145.80 : 521,181.90 = 207,832.20 : x
  2. Step 2: Convert to fraction form
    348,145.80/521,181.90 = 207,832.20/x
  3. Step 3: Cross multiply
    348,145.80x = 521,181.90 × 207,832.20
  4. Step 4: Simplify right side
    348,145.80x = 108,318,380,877.18
  5. Step 5: Solve for x
    x = 108,318,380,877.18/348,145.80
  6. Step 6: Final answer
    x = 311,129.36

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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.