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Finding the Fourth Proportional to 330,245.55, 455,878.40 and 222,960.92

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Solution

The fourth proportional to 330,245.55, 455,878.40 and 222,960.92 is: 307,780.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,245.55 : 455,878.40 = 222,960.92 : x
  2. Step 2: Convert to fraction form
    330,245.55/455,878.40 = 222,960.92/x
  3. Step 3: Cross multiply
    330,245.55x = 455,878.40 × 222,960.92
  4. Step 4: Simplify right side
    330,245.55x = 101,643,064,077.93
  5. Step 5: Solve for x
    x = 101,643,064,077.93/330,245.55
  6. Step 6: Final answer
    x = 307,780.27

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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.