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Finding the Fourth Proportional to 291,042.48, 401,632.68 and 170,255.28

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Solution

The fourth proportional to 291,042.48, 401,632.68 and 170,255.28 is: 234,948.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,042.48 : 401,632.68 = 170,255.28 : x
  2. Step 2: Convert to fraction form
    291,042.48/401,632.68 = 170,255.28/x
  3. Step 3: Cross multiply
    291,042.48x = 401,632.68 × 170,255.28
  4. Step 4: Simplify right side
    291,042.48x = 68,380,084,390.55
  5. Step 5: Solve for x
    x = 68,380,084,390.55/291,042.48
  6. Step 6: Final answer
    x = 234,948.81

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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.