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Finding the Fourth Proportional to 330,348, 455,872.80 and 192,518.40

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Solution

The fourth proportional to 330,348, 455,872.80 and 192,518.40 is: 265,671.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,348 : 455,872.80 = 192,518.40 : x
  2. Step 2: Convert to fraction form
    330,348/455,872.80 = 192,518.40/x
  3. Step 3: Cross multiply
    330,348x = 455,872.80 × 192,518.40
  4. Step 4: Simplify right side
    330,348x = 87,763,902,059.52
  5. Step 5: Solve for x
    x = 87,763,902,059.52/330,348
  6. Step 6: Final answer
    x = 265,671.06

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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.