Home / 272,848.20-409,317.10-85,814.60

Finding the Fourth Proportional to 272,848.20, 409,317.10 and 85,814.60

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Solution

The fourth proportional to 272,848.20, 409,317.10 and 85,814.60 is: 128,735.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,848.20 : 409,317.10 = 85,814.60 : x
  2. Step 2: Convert to fraction form
    272,848.20/409,317.10 = 85,814.60/x
  3. Step 3: Cross multiply
    272,848.20x = 409,317.10 × 85,814.60
  4. Step 4: Simplify right side
    272,848.20x = 35,125,383,209.66
  5. Step 5: Solve for x
    x = 35,125,383,209.66/272,848.20
  6. Step 6: Final answer
    x = 128,735.99

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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.