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Finding the Fourth Proportional to 220,245.10, 330,339.47 and 70,472.86

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Solution

The fourth proportional to 220,245.10, 330,339.47 and 70,472.86 is: 105,700.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,245.10 : 330,339.47 = 70,472.86 : x
  2. Step 2: Convert to fraction form
    220,245.10/330,339.47 = 70,472.86/x
  3. Step 3: Cross multiply
    220,245.10x = 330,339.47 × 70,472.86
  4. Step 4: Simplify right side
    220,245.10x = 23,279,967,678.75
  5. Step 5: Solve for x
    x = 23,279,967,678.75/220,245.10
  6. Step 6: Final answer
    x = 105,700.27

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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.