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Finding the Fourth Proportional to 219,842.76, 329,788.05 and 70,047.84

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Solution

The fourth proportional to 219,842.76, 329,788.05 and 70,047.84 is: 105,079.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,842.76 : 329,788.05 = 70,047.84 : x
  2. Step 2: Convert to fraction form
    219,842.76/329,788.05 = 70,047.84/x
  3. Step 3: Cross multiply
    219,842.76x = 329,788.05 × 70,047.84
  4. Step 4: Simplify right side
    219,842.76x = 23,100,940,560.31
  5. Step 5: Solve for x
    x = 23,100,940,560.31/219,842.76
  6. Step 6: Final answer
    x = 105,079.38

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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.