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Finding the Fourth Proportional to 308,653.52, 425,751.16 and 211,813.16

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Solution

The fourth proportional to 308,653.52, 425,751.16 and 211,813.16 is: 292,171.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,653.52 : 425,751.16 = 211,813.16 : x
  2. Step 2: Convert to fraction form
    308,653.52/425,751.16 = 211,813.16/x
  3. Step 3: Cross multiply
    308,653.52x = 425,751.16 × 211,813.16
  4. Step 4: Simplify right side
    308,653.52x = 90,179,698,573.27
  5. Step 5: Solve for x
    x = 90,179,698,573.27/308,653.52
  6. Step 6: Final answer
    x = 292,171.29

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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.