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Finding the Fourth Proportional to 219,328.65, 329,004.66 and 69,580.91

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Solution

The fourth proportional to 219,328.65, 329,004.66 and 69,580.91 is: 104,375.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,328.65 : 329,004.66 = 69,580.91 : x
  2. Step 2: Convert to fraction form
    219,328.65/329,004.66 = 69,580.91/x
  3. Step 3: Cross multiply
    219,328.65x = 329,004.66 × 69,580.91
  4. Step 4: Simplify right side
    219,328.65x = 22,892,443,637.04
  5. Step 5: Solve for x
    x = 22,892,443,637.04/219,328.65
  6. Step 6: Final answer
    x = 104,375.07

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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.