Home / 219,428.79-329,114.02-86,273.29

Finding the Fourth Proportional to 219,428.79, 329,114.02 and 86,273.29

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Solution

The fourth proportional to 219,428.79, 329,114.02 and 86,273.29 is: 129,398.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,428.79 : 329,114.02 = 86,273.29 : x
  2. Step 2: Convert to fraction form
    219,428.79/329,114.02 = 86,273.29/x
  3. Step 3: Cross multiply
    219,428.79x = 329,114.02 × 86,273.29
  4. Step 4: Simplify right side
    219,428.79x = 28,393,749,290.53
  5. Step 5: Solve for x
    x = 28,393,749,290.53/219,428.79
  6. Step 6: Final answer
    x = 129,398.47

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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.