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Finding the Fourth Proportional to 216,316.82, 324,420.46 and 64,478.86

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Solution

The fourth proportional to 216,316.82, 324,420.46 and 64,478.86 is: 96,701.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,316.82 : 324,420.46 = 64,478.86 : x
  2. Step 2: Convert to fraction form
    216,316.82/324,420.46 = 64,478.86/x
  3. Step 3: Cross multiply
    216,316.82x = 324,420.46 × 64,478.86
  4. Step 4: Simplify right side
    216,316.82x = 20,918,261,421.48
  5. Step 5: Solve for x
    x = 20,918,261,421.48/216,316.82
  6. Step 6: Final answer
    x = 96,701.96

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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.