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Finding the Fourth Proportional to 219,065.80, 328,857.90 and 217,510.60

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Solution

The fourth proportional to 219,065.80, 328,857.90 and 217,510.60 is: 326,523.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,065.80 : 328,857.90 = 217,510.60 : x
  2. Step 2: Convert to fraction form
    219,065.80/328,857.90 = 217,510.60/x
  3. Step 3: Cross multiply
    219,065.80x = 328,857.90 × 217,510.60
  4. Step 4: Simplify right side
    219,065.80x = 71,530,079,143.74
  5. Step 5: Solve for x
    x = 71,530,079,143.74/219,065.80
  6. Step 6: Final answer
    x = 326,523.26

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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.