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Finding the Fourth Proportional to 220,247.32, 330,392.79 and 70,450

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Solution

The fourth proportional to 220,247.32, 330,392.79 and 70,450 is: 105,681.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,247.32 : 330,392.79 = 70,450 : x
  2. Step 2: Convert to fraction form
    220,247.32/330,392.79 = 70,450/x
  3. Step 3: Cross multiply
    220,247.32x = 330,392.79 × 70,450
  4. Step 4: Simplify right side
    220,247.32x = 23,276,172,055.50
  5. Step 5: Solve for x
    x = 23,276,172,055.50/220,247.32
  6. Step 6: Final answer
    x = 105,681.98

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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.