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Finding the Fourth Proportional to 220,068.99, 330,121.10 and 70,330.56

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Solution

The fourth proportional to 220,068.99, 330,121.10 and 70,330.56 is: 105,501.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,068.99 : 330,121.10 = 70,330.56 : x
  2. Step 2: Convert to fraction form
    220,068.99/330,121.10 = 70,330.56/x
  3. Step 3: Cross multiply
    220,068.99x = 330,121.10 × 70,330.56
  4. Step 4: Simplify right side
    220,068.99x = 23,217,601,479.16
  5. Step 5: Solve for x
    x = 23,217,601,479.16/220,068.99
  6. Step 6: Final answer
    x = 105,501.47

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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.