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Finding the Fourth Proportional to 239,368.37, 358,604.21 and 214,720.88

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Solution

The fourth proportional to 239,368.37, 358,604.21 and 214,720.88 is: 321,679.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,368.37 : 358,604.21 = 214,720.88 : x
  2. Step 2: Convert to fraction form
    239,368.37/358,604.21 = 214,720.88/x
  3. Step 3: Cross multiply
    239,368.37x = 358,604.21 × 214,720.88
  4. Step 4: Simplify right side
    239,368.37x = 76,999,810,286.69
  5. Step 5: Solve for x
    x = 76,999,810,286.69/239,368.37
  6. Step 6: Final answer
    x = 321,679.14

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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.