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Finding the Fourth Proportional to 330,758.88, 455,923.20 and 303,300.48

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Solution

The fourth proportional to 330,758.88, 455,923.20 and 303,300.48 is: 418,074.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,758.88 : 455,923.20 = 303,300.48 : x
  2. Step 2: Convert to fraction form
    330,758.88/455,923.20 = 303,300.48/x
  3. Step 3: Cross multiply
    330,758.88x = 455,923.20 × 303,300.48
  4. Step 4: Simplify right side
    330,758.88x = 138,281,725,403.14
  5. Step 5: Solve for x
    x = 138,281,725,403.14/330,758.88
  6. Step 6: Final answer
    x = 418,074.11

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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.