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Finding the Fourth Proportional to 318,880.52, 478,320.78 and 277,823.24

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Solution

The fourth proportional to 318,880.52, 478,320.78 and 277,823.24 is: 416,734.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,880.52 : 478,320.78 = 277,823.24 : x
  2. Step 2: Convert to fraction form
    318,880.52/478,320.78 = 277,823.24/x
  3. Step 3: Cross multiply
    318,880.52x = 478,320.78 × 277,823.24
  4. Step 4: Simplify right side
    318,880.52x = 132,888,628,858.93
  5. Step 5: Solve for x
    x = 132,888,628,858.93/318,880.52
  6. Step 6: Final answer
    x = 416,734.86

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Similar ratio
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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.