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Finding the Fourth Proportional to 217,311.40, 325,967.10 and 210,053.80

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Solution

The fourth proportional to 217,311.40, 325,967.10 and 210,053.80 is: 315,080.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,311.40 : 325,967.10 = 210,053.80 : x
  2. Step 2: Convert to fraction form
    217,311.40/325,967.10 = 210,053.80/x
  3. Step 3: Cross multiply
    217,311.40x = 325,967.10 × 210,053.80
  4. Step 4: Simplify right side
    217,311.40x = 68,470,628,029.98
  5. Step 5: Solve for x
    x = 68,470,628,029.98/217,311.40
  6. Step 6: Final answer
    x = 315,080.70

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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.