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Finding the Fourth Proportional to 255,909.53, 353,268.39 and 165,309.63

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Solution

The fourth proportional to 255,909.53, 353,268.39 and 165,309.63 is: 228,200.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,909.53 : 353,268.39 = 165,309.63 : x
  2. Step 2: Convert to fraction form
    255,909.53/353,268.39 = 165,309.63/x
  3. Step 3: Cross multiply
    255,909.53x = 353,268.39 × 165,309.63
  4. Step 4: Simplify right side
    255,909.53x = 58,398,668,187.59
  5. Step 5: Solve for x
    x = 58,398,668,187.59/255,909.53
  6. Step 6: Final answer
    x = 228,200.45

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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.