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Finding the Fourth Proportional to 333,978.76, 500,968.51 and 81,259.25

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Solution

The fourth proportional to 333,978.76, 500,968.51 and 81,259.25 is: 121,888.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,978.76 : 500,968.51 = 81,259.25 : x
  2. Step 2: Convert to fraction form
    333,978.76/500,968.51 = 81,259.25/x
  3. Step 3: Cross multiply
    333,978.76x = 500,968.51 × 81,259.25
  4. Step 4: Simplify right side
    333,978.76x = 40,708,325,396.22
  5. Step 5: Solve for x
    x = 40,708,325,396.22/333,978.76
  6. Step 6: Final answer
    x = 121,888.97

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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.