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Finding the Fourth Proportional to 468,043.88, 645,899.82 and 253,183.28

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Solution

The fourth proportional to 468,043.88, 645,899.82 and 253,183.28 is: 349,392.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,043.88 : 645,899.82 = 253,183.28 : x
  2. Step 2: Convert to fraction form
    468,043.88/645,899.82 = 253,183.28/x
  3. Step 3: Cross multiply
    468,043.88x = 645,899.82 × 253,183.28
  4. Step 4: Simplify right side
    468,043.88x = 163,531,034,979.01
  5. Step 5: Solve for x
    x = 163,531,034,979.01/468,043.88
  6. Step 6: Final answer
    x = 349,392.53

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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.