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Finding the Fourth Proportional to 219,603.33, 329,484.02 and 86,409.81

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Solution

The fourth proportional to 219,603.33, 329,484.02 and 86,409.81 is: 129,645.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,603.33 : 329,484.02 = 86,409.81 : x
  2. Step 2: Convert to fraction form
    219,603.33/329,484.02 = 86,409.81/x
  3. Step 3: Cross multiply
    219,603.33x = 329,484.02 × 86,409.81
  4. Step 4: Simplify right side
    219,603.33x = 28,470,651,134.19
  5. Step 5: Solve for x
    x = 28,470,651,134.19/219,603.33
  6. Step 6: Final answer
    x = 129,645.81

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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.