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Finding the Fourth Proportional to 287,745.48, 397,080.90 and 166,879.04

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Solution

The fourth proportional to 287,745.48, 397,080.90 and 166,879.04 is: 230,288.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,745.48 : 397,080.90 = 166,879.04 : x
  2. Step 2: Convert to fraction form
    287,745.48/397,080.90 = 166,879.04/x
  3. Step 3: Cross multiply
    287,745.48x = 397,080.90 × 166,879.04
  4. Step 4: Simplify right side
    287,745.48x = 66,264,477,408.93
  5. Step 5: Solve for x
    x = 66,264,477,408.93/287,745.48
  6. Step 6: Final answer
    x = 230,288.51

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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.