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Finding the Fourth Proportional to 219,293.75, 302,627.93 and 128,651.27

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Solution

The fourth proportional to 219,293.75, 302,627.93 and 128,651.27 is: 177,540.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,293.75 : 302,627.93 = 128,651.27 : x
  2. Step 2: Convert to fraction form
    219,293.75/302,627.93 = 128,651.27/x
  3. Step 3: Cross multiply
    219,293.75x = 302,627.93 × 128,651.27
  4. Step 4: Simplify right side
    219,293.75x = 38,933,465,375.58
  5. Step 5: Solve for x
    x = 38,933,465,375.58/219,293.75
  6. Step 6: Final answer
    x = 177,540.25

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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.