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Finding the Fourth Proportional to 330,714.66, 496,070.88 and 90,828.78

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Solution

The fourth proportional to 330,714.66, 496,070.88 and 90,828.78 is: 136,242.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,714.66 : 496,070.88 = 90,828.78 : x
  2. Step 2: Convert to fraction form
    330,714.66/496,070.88 = 90,828.78/x
  3. Step 3: Cross multiply
    330,714.66x = 496,070.88 × 90,828.78
  4. Step 4: Simplify right side
    330,714.66x = 45,057,512,823.93
  5. Step 5: Solve for x
    x = 45,057,512,823.93/330,714.66
  6. Step 6: Final answer
    x = 136,242.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.