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Finding the Fourth Proportional to 328,260.30, 453,372.89 and 220,643.49

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Solution

The fourth proportional to 328,260.30, 453,372.89 and 220,643.49 is: 304,739.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,260.30 : 453,372.89 = 220,643.49 : x
  2. Step 2: Convert to fraction form
    328,260.30/453,372.89 = 220,643.49/x
  3. Step 3: Cross multiply
    328,260.30x = 453,372.89 × 220,643.49
  4. Step 4: Simplify right side
    328,260.30x = 100,033,775,617.77
  5. Step 5: Solve for x
    x = 100,033,775,617.77/328,260.30
  6. Step 6: Final answer
    x = 304,739.18

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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.