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Finding the Fourth Proportional to 231,500.65, 348,986.12 and 216,069.49

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Solution

The fourth proportional to 231,500.65, 348,986.12 and 216,069.49 is: 325,723.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,500.65 : 348,986.12 = 216,069.49 : x
  2. Step 2: Convert to fraction form
    231,500.65/348,986.12 = 216,069.49/x
  3. Step 3: Cross multiply
    231,500.65x = 348,986.12 × 216,069.49
  4. Step 4: Simplify right side
    231,500.65x = 75,405,251,885.13
  5. Step 5: Solve for x
    x = 75,405,251,885.13/231,500.65
  6. Step 6: Final answer
    x = 325,723.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.