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Finding the Fourth Proportional to 368,841.36, 552,650.54 and 128,826.30

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Solution

The fourth proportional to 368,841.36, 552,650.54 and 128,826.30 is: 193,025.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,841.36 : 552,650.54 = 128,826.30 : x
  2. Step 2: Convert to fraction form
    368,841.36/552,650.54 = 128,826.30/x
  3. Step 3: Cross multiply
    368,841.36x = 552,650.54 × 128,826.30
  4. Step 4: Simplify right side
    368,841.36x = 71,195,924,261.20
  5. Step 5: Solve for x
    x = 71,195,924,261.20/368,841.36
  6. Step 6: Final answer
    x = 193,025.87

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1.5x scale

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.