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Finding the Fourth Proportional to 219,894.86, 329,873.74 and 70,136.85

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Solution

The fourth proportional to 219,894.86, 329,873.74 and 70,136.85 is: 105,215.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,894.86 : 329,873.74 = 70,136.85 : x
  2. Step 2: Convert to fraction form
    219,894.86/329,873.74 = 70,136.85/x
  3. Step 3: Cross multiply
    219,894.86x = 329,873.74 × 70,136.85
  4. Step 4: Simplify right side
    219,894.86x = 23,136,306,083.00
  5. Step 5: Solve for x
    x = 23,136,306,083.00/219,894.86
  6. Step 6: Final answer
    x = 105,215.31

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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.