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Finding the Fourth Proportional to 303,523.58, 455,285.13 and 78,865.18

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Solution

The fourth proportional to 303,523.58, 455,285.13 and 78,865.18 is: 118,297.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,523.58 : 455,285.13 = 78,865.18 : x
  2. Step 2: Convert to fraction form
    303,523.58/455,285.13 = 78,865.18/x
  3. Step 3: Cross multiply
    303,523.58x = 455,285.13 × 78,865.18
  4. Step 4: Simplify right side
    303,523.58x = 35,906,143,728.77
  5. Step 5: Solve for x
    x = 35,906,143,728.77/303,523.58
  6. Step 6: Final answer
    x = 118,297.71

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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.