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Finding the Fourth Proportional to 266,420.76, 399,788.75 and 98,059.33

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Solution

The fourth proportional to 266,420.76, 399,788.75 and 98,059.33 is: 147,147.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,420.76 : 399,788.75 = 98,059.33 : x
  2. Step 2: Convert to fraction form
    266,420.76/399,788.75 = 98,059.33/x
  3. Step 3: Cross multiply
    266,420.76x = 399,788.75 × 98,059.33
  4. Step 4: Simplify right side
    266,420.76x = 39,203,016,966.54
  5. Step 5: Solve for x
    x = 39,203,016,966.54/266,420.76
  6. Step 6: Final answer
    x = 147,147.01

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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.