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Finding the Fourth Proportional to 330,758.20, 456,408.30 and 187,489.72

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Solution

The fourth proportional to 330,758.20, 456,408.30 and 187,489.72 is: 258,714.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,758.20 : 456,408.30 = 187,489.72 : x
  2. Step 2: Convert to fraction form
    330,758.20/456,408.30 = 187,489.72/x
  3. Step 3: Cross multiply
    330,758.20x = 456,408.30 × 187,489.72
  4. Step 4: Simplify right side
    330,758.20x = 85,571,864,372.68
  5. Step 5: Solve for x
    x = 85,571,864,372.68/330,758.20
  6. Step 6: Final answer
    x = 258,714.26

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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.