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Finding the Fourth Proportional to 221,387.37, 330,354.32 and 197,530.98

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Solution

The fourth proportional to 221,387.37, 330,354.32 and 197,530.98 is: 294,755.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,387.37 : 330,354.32 = 197,530.98 : x
  2. Step 2: Convert to fraction form
    221,387.37/330,354.32 = 197,530.98/x
  3. Step 3: Cross multiply
    221,387.37x = 330,354.32 × 197,530.98
  4. Step 4: Simplify right side
    221,387.37x = 65,255,212,576.83
  5. Step 5: Solve for x
    x = 65,255,212,576.83/221,387.37
  6. Step 6: Final answer
    x = 294,755.81

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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.