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Finding the Fourth Proportional to 636,342.48, 954,310.74 and 209,798.82

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Solution

The fourth proportional to 636,342.48, 954,310.74 and 209,798.82 is: 314,631.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,342.48 : 954,310.74 = 209,798.82 : x
  2. Step 2: Convert to fraction form
    636,342.48/954,310.74 = 209,798.82/x
  3. Step 3: Cross multiply
    636,342.48x = 954,310.74 × 209,798.82
  4. Step 4: Simplify right side
    636,342.48x = 200,213,267,165.33
  5. Step 5: Solve for x
    x = 200,213,267,165.33/636,342.48
  6. Step 6: Final answer
    x = 314,631.31

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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.