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Finding the Fourth Proportional to 355,638.80, 532,594.20 and 189,059.60

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Solution

The fourth proportional to 355,638.80, 532,594.20 and 189,059.60 is: 283,130.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,638.80 : 532,594.20 = 189,059.60 : x
  2. Step 2: Convert to fraction form
    355,638.80/532,594.20 = 189,059.60/x
  3. Step 3: Cross multiply
    355,638.80x = 532,594.20 × 189,059.60
  4. Step 4: Simplify right side
    355,638.80x = 100,692,046,414.32
  5. Step 5: Solve for x
    x = 100,692,046,414.32/355,638.80
  6. Step 6: Final answer
    x = 283,130.09

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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.