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Finding the Fourth Proportional to 455,297.46, 628,311.86 and 248,566.20

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Solution

The fourth proportional to 455,297.46, 628,311.86 and 248,566.20 is: 343,022.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,297.46 : 628,311.86 = 248,566.20 : x
  2. Step 2: Convert to fraction form
    455,297.46/628,311.86 = 248,566.20/x
  3. Step 3: Cross multiply
    455,297.46x = 628,311.86 × 248,566.20
  4. Step 4: Simplify right side
    455,297.46x = 156,177,091,455.13
  5. Step 5: Solve for x
    x = 156,177,091,455.13/455,297.46
  6. Step 6: Final answer
    x = 343,022.10

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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.