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Finding the Fourth Proportional to 330,883.74, 456,774.39 and 211,720.86

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Solution

The fourth proportional to 330,883.74, 456,774.39 and 211,720.86 is: 292,273.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,883.74 : 456,774.39 = 211,720.86 : x
  2. Step 2: Convert to fraction form
    330,883.74/456,774.39 = 211,720.86/x
  3. Step 3: Cross multiply
    330,883.74x = 456,774.39 × 211,720.86
  4. Step 4: Simplify right side
    330,883.74x = 96,708,666,676.78
  5. Step 5: Solve for x
    x = 96,708,666,676.78/330,883.74
  6. Step 6: Final answer
    x = 292,273.86

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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.