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Finding the Fourth Proportional to 354,489.30, 531,670.80 and 141,239.33

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Solution

The fourth proportional to 354,489.30, 531,670.80 and 141,239.33 is: 211,833.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,489.30 : 531,670.80 = 141,239.33 : x
  2. Step 2: Convert to fraction form
    354,489.30/531,670.80 = 141,239.33/x
  3. Step 3: Cross multiply
    354,489.30x = 531,670.80 × 141,239.33
  4. Step 4: Simplify right side
    354,489.30x = 75,092,828,901.74
  5. Step 5: Solve for x
    x = 75,092,828,901.74/354,489.30
  6. Step 6: Final answer
    x = 211,833.84

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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.