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Finding the Fourth Proportional to 308,495.64, 425,627.10 and 172,511.22

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Solution

The fourth proportional to 308,495.64, 425,627.10 and 172,511.22 is: 238,011.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,495.64 : 425,627.10 = 172,511.22 : x
  2. Step 2: Convert to fraction form
    308,495.64/425,627.10 = 172,511.22/x
  3. Step 3: Cross multiply
    308,495.64x = 425,627.10 × 172,511.22
  4. Step 4: Simplify right side
    308,495.64x = 73,425,450,286.06
  5. Step 5: Solve for x
    x = 73,425,450,286.06/308,495.64
  6. Step 6: Final answer
    x = 238,011.31

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1.5x scale

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.