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Finding the Fourth Proportional to 309,599, 427,265.28 and 173,641

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Solution

The fourth proportional to 309,599, 427,265.28 and 173,641 is: 239,635.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,599 : 427,265.28 = 173,641 : x
  2. Step 2: Convert to fraction form
    309,599/427,265.28 = 173,641/x
  3. Step 3: Cross multiply
    309,599x = 427,265.28 × 173,641
  4. Step 4: Simplify right side
    309,599x = 74,190,770,484.48
  5. Step 5: Solve for x
    x = 74,190,770,484.48/309,599
  6. Step 6: Final answer
    x = 239,635.05

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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.