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Finding the Fourth Proportional to 347,630.40, 521,445.60 and 324,129.60

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Solution

The fourth proportional to 347,630.40, 521,445.60 and 324,129.60 is: 486,194.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,630.40 : 521,445.60 = 324,129.60 : x
  2. Step 2: Convert to fraction form
    347,630.40/521,445.60 = 324,129.60/x
  3. Step 3: Cross multiply
    347,630.40x = 521,445.60 × 324,129.60
  4. Step 4: Simplify right side
    347,630.40x = 169,015,953,749.76
  5. Step 5: Solve for x
    x = 169,015,953,749.76/347,630.40
  6. Step 6: Final answer
    x = 486,194.40

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1.5x scale

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.