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Finding the Fourth Proportional to 343,742.40, 515,613.60 and 324,059.40

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Solution

The fourth proportional to 343,742.40, 515,613.60 and 324,059.40 is: 486,089.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,742.40 : 515,613.60 = 324,059.40 : x
  2. Step 2: Convert to fraction form
    343,742.40/515,613.60 = 324,059.40/x
  3. Step 3: Cross multiply
    343,742.40x = 515,613.60 × 324,059.40
  4. Step 4: Simplify right side
    343,742.40x = 167,089,433,847.84
  5. Step 5: Solve for x
    x = 167,089,433,847.84/343,742.40
  6. Step 6: Final answer
    x = 486,089.10

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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.