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Finding the Fourth Proportional to 219,048.54, 302,229.54 and 128,355.81

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Solution

The fourth proportional to 219,048.54, 302,229.54 and 128,355.81 is: 177,097.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,048.54 : 302,229.54 = 128,355.81 : x
  2. Step 2: Convert to fraction form
    219,048.54/302,229.54 = 128,355.81/x
  3. Step 3: Cross multiply
    219,048.54x = 302,229.54 × 128,355.81
  4. Step 4: Simplify right side
    219,048.54x = 38,792,917,412.63
  5. Step 5: Solve for x
    x = 38,792,917,412.63/219,048.54
  6. Step 6: Final answer
    x = 177,097.36

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.