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Finding the Fourth Proportional to 308,223.30, 425,346.71 and 172,257.11

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Solution

The fourth proportional to 308,223.30, 425,346.71 and 172,257.11 is: 237,714.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,223.30 : 425,346.71 = 172,257.11 : x
  2. Step 2: Convert to fraction form
    308,223.30/425,346.71 = 172,257.11/x
  3. Step 3: Cross multiply
    308,223.30x = 425,346.71 × 172,257.11
  4. Step 4: Simplify right side
    308,223.30x = 73,268,993,619.64
  5. Step 5: Solve for x
    x = 73,268,993,619.64/308,223.30
  6. Step 6: Final answer
    x = 237,714.00

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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.