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Finding the Fourth Proportional to 198,959.46, 298,409.76 and 72,570.12

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Solution

The fourth proportional to 198,959.46, 298,409.76 and 72,570.12 is: 108,844.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,959.46 : 298,409.76 = 72,570.12 : x
  2. Step 2: Convert to fraction form
    198,959.46/298,409.76 = 72,570.12/x
  3. Step 3: Cross multiply
    198,959.46x = 298,409.76 × 72,570.12
  4. Step 4: Simplify right side
    198,959.46x = 21,655,632,092.37
  5. Step 5: Solve for x
    x = 21,655,632,092.37/198,959.46
  6. Step 6: Final answer
    x = 108,844.45

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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.