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Finding the Fourth Proportional to 455,213.92, 628,101.42 and 261,584.23

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Solution

The fourth proportional to 455,213.92, 628,101.42 and 261,584.23 is: 360,932.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,213.92 : 628,101.42 = 261,584.23 : x
  2. Step 2: Convert to fraction form
    455,213.92/628,101.42 = 261,584.23/x
  3. Step 3: Cross multiply
    455,213.92x = 628,101.42 × 261,584.23
  4. Step 4: Simplify right side
    455,213.92x = 164,301,423,172.10
  5. Step 5: Solve for x
    x = 164,301,423,172.10/455,213.92
  6. Step 6: Final answer
    x = 360,932.34

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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.