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Finding the Fourth Proportional to 220,372.16, 330,045.51 and 214,311.20

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Solution

The fourth proportional to 220,372.16, 330,045.51 and 214,311.20 is: 320,968.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,372.16 : 330,045.51 = 214,311.20 : x
  2. Step 2: Convert to fraction form
    220,372.16/330,045.51 = 214,311.20/x
  3. Step 3: Cross multiply
    220,372.16x = 330,045.51 × 214,311.20
  4. Step 4: Simplify right side
    220,372.16x = 70,732,449,302.71
  5. Step 5: Solve for x
    x = 70,732,449,302.71/220,372.16
  6. Step 6: Final answer
    x = 320,968.17

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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.