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Finding the Fourth Proportional to 353,213.12, 487,438.92 and 202,310

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Solution

The fourth proportional to 353,213.12, 487,438.92 and 202,310 is: 279,190.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,213.12 : 487,438.92 = 202,310 : x
  2. Step 2: Convert to fraction form
    353,213.12/487,438.92 = 202,310/x
  3. Step 3: Cross multiply
    353,213.12x = 487,438.92 × 202,310
  4. Step 4: Simplify right side
    353,213.12x = 98,613,767,905.20
  5. Step 5: Solve for x
    x = 98,613,767,905.20/353,213.12
  6. Step 6: Final answer
    x = 279,190.56

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.