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Finding the Fourth Proportional to 289,806.46, 399,470.81 and 228,452.60

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Solution

The fourth proportional to 289,806.46, 399,470.81 and 228,452.60 is: 314,900.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,806.46 : 399,470.81 = 228,452.60 : x
  2. Step 2: Convert to fraction form
    289,806.46/399,470.81 = 228,452.60/x
  3. Step 3: Cross multiply
    289,806.46x = 399,470.81 × 228,452.60
  4. Step 4: Simplify right side
    289,806.46x = 91,260,145,025.02
  5. Step 5: Solve for x
    x = 91,260,145,025.02/289,806.46
  6. Step 6: Final answer
    x = 314,900.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.