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Finding the Fourth Proportional to 221,353.31, 330,303.52 and 197,496.86

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Solution

The fourth proportional to 221,353.31, 330,303.52 and 197,496.86 is: 294,704.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,353.31 : 330,303.52 = 197,496.86 : x
  2. Step 2: Convert to fraction form
    221,353.31/330,303.52 = 197,496.86/x
  3. Step 3: Cross multiply
    221,353.31x = 330,303.52 × 197,496.86
  4. Step 4: Simplify right side
    221,353.31x = 65,233,905,407.95
  5. Step 5: Solve for x
    x = 65,233,905,407.95/221,353.31
  6. Step 6: Final answer
    x = 294,704.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.