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Finding the Fourth Proportional to 286,612.52, 429,923.04 and 109,129.37

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Solution

The fourth proportional to 286,612.52, 429,923.04 and 109,129.37 is: 163,695.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,612.52 : 429,923.04 = 109,129.37 : x
  2. Step 2: Convert to fraction form
    286,612.52/429,923.04 = 109,129.37/x
  3. Step 3: Cross multiply
    286,612.52x = 429,923.04 × 109,129.37
  4. Step 4: Simplify right side
    286,612.52x = 46,917,229,958.04
  5. Step 5: Solve for x
    x = 46,917,229,958.04/286,612.52
  6. Step 6: Final answer
    x = 163,695.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.