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Finding the Fourth Proportional to 354,132.80, 531,501.60 and 143,921.60

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Solution

The fourth proportional to 354,132.80, 531,501.60 and 143,921.60 is: 216,005.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,132.80 : 531,501.60 = 143,921.60 : x
  2. Step 2: Convert to fraction form
    354,132.80/531,501.60 = 143,921.60/x
  3. Step 3: Cross multiply
    354,132.80x = 531,501.60 × 143,921.60
  4. Step 4: Simplify right side
    354,132.80x = 76,494,560,674.56
  5. Step 5: Solve for x
    x = 76,494,560,674.56/354,132.80
  6. Step 6: Final answer
    x = 216,005.30

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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.