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Finding the Fourth Proportional to 192,003.40, 288,005.10 and 67,328.20

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Solution

The fourth proportional to 192,003.40, 288,005.10 and 67,328.20 is: 100,992.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,003.40 : 288,005.10 = 67,328.20 : x
  2. Step 2: Convert to fraction form
    192,003.40/288,005.10 = 67,328.20/x
  3. Step 3: Cross multiply
    192,003.40x = 288,005.10 × 67,328.20
  4. Step 4: Simplify right side
    192,003.40x = 19,390,864,973.82
  5. Step 5: Solve for x
    x = 19,390,864,973.82/192,003.40
  6. Step 6: Final answer
    x = 100,992.30

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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.