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Finding the Fourth Proportional to 291,048.48, 401,645.34 and 163,725.03

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Solution

The fourth proportional to 291,048.48, 401,645.34 and 163,725.03 is: 225,939.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,048.48 : 401,645.34 = 163,725.03 : x
  2. Step 2: Convert to fraction form
    291,048.48/401,645.34 = 163,725.03/x
  3. Step 3: Cross multiply
    291,048.48x = 401,645.34 × 163,725.03
  4. Step 4: Simplify right side
    291,048.48x = 65,759,395,340.86
  5. Step 5: Solve for x
    x = 65,759,395,340.86/291,048.48
  6. Step 6: Final answer
    x = 225,939.66

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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.