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Finding the Fourth Proportional to 219,836.49, 329,643.86 and 156,620.49

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Solution

The fourth proportional to 219,836.49, 329,643.86 and 156,620.49 is: 234,851.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,836.49 : 329,643.86 = 156,620.49 : x
  2. Step 2: Convert to fraction form
    219,836.49/329,643.86 = 156,620.49/x
  3. Step 3: Cross multiply
    219,836.49x = 329,643.86 × 156,620.49
  4. Step 4: Simplify right side
    219,836.49x = 51,628,982,095.59
  5. Step 5: Solve for x
    x = 51,628,982,095.59/219,836.49
  6. Step 6: Final answer
    x = 234,851.74

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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.