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Finding the Fourth Proportional to 308,864.25, 426,241.57 and 172,897.39

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Solution

The fourth proportional to 308,864.25, 426,241.57 and 172,897.39 is: 238,603.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,864.25 : 426,241.57 = 172,897.39 : x
  2. Step 2: Convert to fraction form
    308,864.25/426,241.57 = 172,897.39/x
  3. Step 3: Cross multiply
    308,864.25x = 426,241.57 × 172,897.39
  4. Step 4: Simplify right side
    308,864.25x = 73,696,056,099.77
  5. Step 5: Solve for x
    x = 73,696,056,099.77/308,864.25
  6. Step 6: Final answer
    x = 238,603.39

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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.