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Finding the Fourth Proportional to 455,222.85, 628,113.60 and 261,593.16

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Solution

The fourth proportional to 455,222.85, 628,113.60 and 261,593.16 is: 360,944.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,222.85 : 628,113.60 = 261,593.16 : x
  2. Step 2: Convert to fraction form
    455,222.85/628,113.60 = 261,593.16/x
  3. Step 3: Cross multiply
    455,222.85x = 628,113.60 × 261,593.16
  4. Step 4: Simplify right side
    455,222.85x = 164,310,221,462.98
  5. Step 5: Solve for x
    x = 164,310,221,462.98/455,222.85
  6. Step 6: Final answer
    x = 360,944.58

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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.