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Finding the Fourth Proportional to 231,431.80, 347,730.90 and 147,232.30

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Solution

The fourth proportional to 231,431.80, 347,730.90 and 147,232.30 is: 221,219.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,431.80 : 347,730.90 = 147,232.30 : x
  2. Step 2: Convert to fraction form
    231,431.80/347,730.90 = 147,232.30/x
  3. Step 3: Cross multiply
    231,431.80x = 347,730.90 × 147,232.30
  4. Step 4: Simplify right side
    231,431.80x = 51,197,220,188.07
  5. Step 5: Solve for x
    x = 51,197,220,188.07/231,431.80
  6. Step 6: Final answer
    x = 221,219.47

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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.