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Finding the Fourth Proportional to 266,420.69, 399,788.66 and 98,059.27

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Solution

The fourth proportional to 266,420.69, 399,788.66 and 98,059.27 is: 147,146.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,420.69 : 399,788.66 = 98,059.27 : x
  2. Step 2: Convert to fraction form
    266,420.69/399,788.66 = 98,059.27/x
  3. Step 3: Cross multiply
    266,420.69x = 399,788.66 × 98,059.27
  4. Step 4: Simplify right side
    266,420.69x = 39,202,982,664.11
  5. Step 5: Solve for x
    x = 39,202,982,664.11/266,420.69
  6. Step 6: Final answer
    x = 147,146.91

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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.