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Finding the Fourth Proportional to 308,101.04, 425,171.58 and 172,136

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Solution

The fourth proportional to 308,101.04, 425,171.58 and 172,136 is: 237,543.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,101.04 : 425,171.58 = 172,136 : x
  2. Step 2: Convert to fraction form
    308,101.04/425,171.58 = 172,136/x
  3. Step 3: Cross multiply
    308,101.04x = 425,171.58 × 172,136
  4. Step 4: Simplify right side
    308,101.04x = 73,187,335,094.88
  5. Step 5: Solve for x
    x = 73,187,335,094.88/308,101.04
  6. Step 6: Final answer
    x = 237,543.29

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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.