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Finding the Fourth Proportional to 356,315.33, 491,688.54 and 203,349.26

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Solution

The fourth proportional to 356,315.33, 491,688.54 and 203,349.26 is: 280,606.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,315.33 : 491,688.54 = 203,349.26 : x
  2. Step 2: Convert to fraction form
    356,315.33/491,688.54 = 203,349.26/x
  3. Step 3: Cross multiply
    356,315.33x = 491,688.54 × 203,349.26
  4. Step 4: Simplify right side
    356,315.33x = 99,984,498,301.04
  5. Step 5: Solve for x
    x = 99,984,498,301.04/356,315.33
  6. Step 6: Final answer
    x = 280,606.79

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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.