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Finding the Fourth Proportional to 220,213.99, 330,342.86 and 70,416.64

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Solution

The fourth proportional to 220,213.99, 330,342.86 and 70,416.64 is: 105,631.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,213.99 : 330,342.86 = 70,416.64 : x
  2. Step 2: Convert to fraction form
    220,213.99/330,342.86 = 70,416.64/x
  3. Step 3: Cross multiply
    220,213.99x = 330,342.86 × 70,416.64
  4. Step 4: Simplify right side
    220,213.99x = 23,261,634,442.07
  5. Step 5: Solve for x
    x = 23,261,634,442.07/220,213.99
  6. Step 6: Final answer
    x = 105,631.96

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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.