Home / 354,231.20-531,411.60-143,890.40

Finding the Fourth Proportional to 354,231.20, 531,411.60 and 143,890.40

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Solution

The fourth proportional to 354,231.20, 531,411.60 and 143,890.40 is: 215,861.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,231.20 : 531,411.60 = 143,890.40 : x
  2. Step 2: Convert to fraction form
    354,231.20/531,411.60 = 143,890.40/x
  3. Step 3: Cross multiply
    354,231.20x = 531,411.60 × 143,890.40
  4. Step 4: Simplify right side
    354,231.20x = 76,465,027,688.64
  5. Step 5: Solve for x
    x = 76,465,027,688.64/354,231.20
  6. Step 6: Final answer
    x = 215,861.92

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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.