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Finding the Fourth Proportional to 355,696.20, 490,926.42 and 228,530.76

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Solution

The fourth proportional to 355,696.20, 490,926.42 and 228,530.76 is: 315,414.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,696.20 : 490,926.42 = 228,530.76 : x
  2. Step 2: Convert to fraction form
    355,696.20/490,926.42 = 228,530.76/x
  3. Step 3: Cross multiply
    355,696.20x = 490,926.42 × 228,530.76
  4. Step 4: Simplify right side
    355,696.20x = 112,191,787,866.68
  5. Step 5: Solve for x
    x = 112,191,787,866.68/355,696.20
  6. Step 6: Final answer
    x = 315,414.64

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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.