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Finding the Fourth Proportional to 354,270.40, 531,405.60 and 132,625.60

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Solution

The fourth proportional to 354,270.40, 531,405.60 and 132,625.60 is: 198,938.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,270.40 : 531,405.60 = 132,625.60 : x
  2. Step 2: Convert to fraction form
    354,270.40/531,405.60 = 132,625.60/x
  3. Step 3: Cross multiply
    354,270.40x = 531,405.60 × 132,625.60
  4. Step 4: Simplify right side
    354,270.40x = 70,477,986,543.36
  5. Step 5: Solve for x
    x = 70,477,986,543.36/354,270.40
  6. Step 6: Final answer
    x = 198,938.40

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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.