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Finding the Fourth Proportional to 379,324.66, 569,071.73 and 142,669.39

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Solution

The fourth proportional to 379,324.66, 569,071.73 and 142,669.39 is: 214,035.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,324.66 : 569,071.73 = 142,669.39 : x
  2. Step 2: Convert to fraction form
    379,324.66/569,071.73 = 142,669.39/x
  3. Step 3: Cross multiply
    379,324.66x = 569,071.73 × 142,669.39
  4. Step 4: Simplify right side
    379,324.66x = 81,189,116,585.34
  5. Step 5: Solve for x
    x = 81,189,116,585.34/379,324.66
  6. Step 6: Final answer
    x = 214,035.96

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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.