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Finding the Fourth Proportional to 199,385.40, 299,078.10 and 133,030.20

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Solution

The fourth proportional to 199,385.40, 299,078.10 and 133,030.20 is: 199,545.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,385.40 : 299,078.10 = 133,030.20 : x
  2. Step 2: Convert to fraction form
    199,385.40/299,078.10 = 133,030.20/x
  3. Step 3: Cross multiply
    199,385.40x = 299,078.10 × 133,030.20
  4. Step 4: Simplify right side
    199,385.40x = 39,786,419,458.62
  5. Step 5: Solve for x
    x = 39,786,419,458.62/199,385.40
  6. Step 6: Final answer
    x = 199,545.30

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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.