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Finding the Fourth Proportional to 455,589.63, 628,709.94 and 248,858.19

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Solution

The fourth proportional to 455,589.63, 628,709.94 and 248,858.19 is: 343,422.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,589.63 : 628,709.94 = 248,858.19 : x
  2. Step 2: Convert to fraction form
    455,589.63/628,709.94 = 248,858.19/x
  3. Step 3: Cross multiply
    455,589.63x = 628,709.94 × 248,858.19
  4. Step 4: Simplify right side
    455,589.63x = 156,459,617,703.41
  5. Step 5: Solve for x
    x = 156,459,617,703.41/455,589.63
  6. Step 6: Final answer
    x = 343,422.25

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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.