Home / 219,916.72-329,881.20-77,741.89

Finding the Fourth Proportional to 219,916.72, 329,881.20 and 77,741.89

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Solution

The fourth proportional to 219,916.72, 329,881.20 and 77,741.89 is: 116,615.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,916.72 : 329,881.20 = 77,741.89 : x
  2. Step 2: Convert to fraction form
    219,916.72/329,881.20 = 77,741.89/x
  3. Step 3: Cross multiply
    219,916.72x = 329,881.20 × 77,741.89
  4. Step 4: Simplify right side
    219,916.72x = 25,645,587,963.47
  5. Step 5: Solve for x
    x = 25,645,587,963.47/219,916.72
  6. Step 6: Final answer
    x = 116,615.00

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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.