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Finding the Fourth Proportional to 231,429.80, 347,727.90 and 147,230.30

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Solution

The fourth proportional to 231,429.80, 347,727.90 and 147,230.30 is: 221,216.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,429.80 : 347,727.90 = 147,230.30 : x
  2. Step 2: Convert to fraction form
    231,429.80/347,727.90 = 147,230.30/x
  3. Step 3: Cross multiply
    231,429.80x = 347,727.90 × 147,230.30
  4. Step 4: Simplify right side
    231,429.80x = 51,196,083,035.37
  5. Step 5: Solve for x
    x = 51,196,083,035.37/231,429.80
  6. Step 6: Final answer
    x = 221,216.47

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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.