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Finding the Fourth Proportional to 455,395.39, 628,433.67 and 251,441.92

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Solution

The fourth proportional to 455,395.39, 628,433.67 and 251,441.92 is: 346,983.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,395.39 : 628,433.67 = 251,441.92 : x
  2. Step 2: Convert to fraction form
    455,395.39/628,433.67 = 251,441.92/x
  3. Step 3: Cross multiply
    455,395.39x = 628,433.67 × 251,441.92
  4. Step 4: Simplify right side
    455,395.39x = 158,014,568,184.36
  5. Step 5: Solve for x
    x = 158,014,568,184.36/455,395.39
  6. Step 6: Final answer
    x = 346,983.24

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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.