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Finding the Fourth Proportional to 303,478.40, 455,217.60 and 146,014.40

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Solution

The fourth proportional to 303,478.40, 455,217.60 and 146,014.40 is: 219,021.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,478.40 : 455,217.60 = 146,014.40 : x
  2. Step 2: Convert to fraction form
    303,478.40/455,217.60 = 146,014.40/x
  3. Step 3: Cross multiply
    303,478.40x = 455,217.60 × 146,014.40
  4. Step 4: Simplify right side
    303,478.40x = 66,468,324,733.44
  5. Step 5: Solve for x
    x = 66,468,324,733.44/303,478.40
  6. Step 6: Final answer
    x = 219,021.60

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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.