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Finding the Fourth Proportional to 172,849, 238,730.24 and 115,388.28

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Solution

The fourth proportional to 172,849, 238,730.24 and 115,388.28 is: 159,368.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,849 : 238,730.24 = 115,388.28 : x
  2. Step 2: Convert to fraction form
    172,849/238,730.24 = 115,388.28/x
  3. Step 3: Cross multiply
    172,849x = 238,730.24 × 115,388.28
  4. Step 4: Simplify right side
    172,849x = 27,546,671,777.59
  5. Step 5: Solve for x
    x = 27,546,671,777.59/172,849
  6. Step 6: Final answer
    x = 159,368.42

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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.