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Finding the Fourth Proportional to 219,328.92, 329,005.40 and 69,558.37

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Solution

The fourth proportional to 219,328.92, 329,005.40 and 69,558.37 is: 104,341.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,328.92 : 329,005.40 = 69,558.37 : x
  2. Step 2: Convert to fraction form
    219,328.92/329,005.40 = 69,558.37/x
  3. Step 3: Cross multiply
    219,328.92x = 329,005.40 × 69,558.37
  4. Step 4: Simplify right side
    219,328.92x = 22,885,078,174.89
  5. Step 5: Solve for x
    x = 22,885,078,174.89/219,328.92
  6. Step 6: Final answer
    x = 104,341.36

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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.