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Finding the Fourth Proportional to 219,954.62, 329,931.81 and 79,713.02

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Solution

The fourth proportional to 219,954.62, 329,931.81 and 79,713.02 is: 119,569.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,954.62 : 329,931.81 = 79,713.02 : x
  2. Step 2: Convert to fraction form
    219,954.62/329,931.81 = 79,713.02/x
  3. Step 3: Cross multiply
    219,954.62x = 329,931.81 × 79,713.02
  4. Step 4: Simplify right side
    219,954.62x = 26,299,860,969.17
  5. Step 5: Solve for x
    x = 26,299,860,969.17/219,954.62
  6. Step 6: Final answer
    x = 119,569.49

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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.