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Finding the Fourth Proportional to 312,062.40, 468,093.60 and 280,569.60

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Solution

The fourth proportional to 312,062.40, 468,093.60 and 280,569.60 is: 420,854.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,062.40 : 468,093.60 = 280,569.60 : x
  2. Step 2: Convert to fraction form
    312,062.40/468,093.60 = 280,569.60/x
  3. Step 3: Cross multiply
    312,062.40x = 468,093.60 × 280,569.60
  4. Step 4: Simplify right side
    312,062.40x = 131,332,834,114.56
  5. Step 5: Solve for x
    x = 131,332,834,114.56/312,062.40
  6. Step 6: Final answer
    x = 420,854.40

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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.