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Finding the Fourth Proportional to 272,912.80, 409,676.40 and 210,858.40

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Solution

The fourth proportional to 272,912.80, 409,676.40 and 210,858.40 is: 316,524.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,912.80 : 409,676.40 = 210,858.40 : x
  2. Step 2: Convert to fraction form
    272,912.80/409,676.40 = 210,858.40/x
  3. Step 3: Cross multiply
    272,912.80x = 409,676.40 × 210,858.40
  4. Step 4: Simplify right side
    272,912.80x = 86,383,710,221.76
  5. Step 5: Solve for x
    x = 86,383,710,221.76/272,912.80
  6. Step 6: Final answer
    x = 316,524.95

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1.5x scale

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.