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Finding the Fourth Proportional to 219,801.90, 329,699.25 and 70,040.15

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Solution

The fourth proportional to 219,801.90, 329,699.25 and 70,040.15 is: 105,059.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,801.90 : 329,699.25 = 70,040.15 : x
  2. Step 2: Convert to fraction form
    219,801.90/329,699.25 = 70,040.15/x
  3. Step 3: Cross multiply
    219,801.90x = 329,699.25 × 70,040.15
  4. Step 4: Simplify right side
    219,801.90x = 23,092,183,276.39
  5. Step 5: Solve for x
    x = 23,092,183,276.39/219,801.90
  6. Step 6: Final answer
    x = 105,059.07

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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.