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Finding the Fourth Proportional to 326,415.22, 489,625.56 and 89,770.88

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Solution

The fourth proportional to 326,415.22, 489,625.56 and 89,770.88 is: 134,657.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,415.22 : 489,625.56 = 89,770.88 : x
  2. Step 2: Convert to fraction form
    326,415.22/489,625.56 = 89,770.88/x
  3. Step 3: Cross multiply
    326,415.22x = 489,625.56 × 89,770.88
  4. Step 4: Simplify right side
    326,415.22x = 43,954,118,615.76
  5. Step 5: Solve for x
    x = 43,954,118,615.76/326,415.22
  6. Step 6: Final answer
    x = 134,657.08

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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.