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Finding the Fourth Proportional to 510,221.23, 703,869.71 and 328,991.37

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Solution

The fourth proportional to 510,221.23, 703,869.71 and 328,991.37 is: 453,856.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,221.23 : 703,869.71 = 328,991.37 : x
  2. Step 2: Convert to fraction form
    510,221.23/703,869.71 = 328,991.37/x
  3. Step 3: Cross multiply
    510,221.23x = 703,869.71 × 328,991.37
  4. Step 4: Simplify right side
    510,221.23x = 231,567,058,080.85
  5. Step 5: Solve for x
    x = 231,567,058,080.85/510,221.23
  6. Step 6: Final answer
    x = 453,856.18

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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.