Home / 205,165.60-307,748.40-203,999.20

Finding the Fourth Proportional to 205,165.60, 307,748.40 and 203,999.20

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Solution

The fourth proportional to 205,165.60, 307,748.40 and 203,999.20 is: 305,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,165.60 : 307,748.40 = 203,999.20 : x
  2. Step 2: Convert to fraction form
    205,165.60/307,748.40 = 203,999.20/x
  3. Step 3: Cross multiply
    205,165.60x = 307,748.40 × 203,999.20
  4. Step 4: Simplify right side
    205,165.60x = 62,780,427,401.28
  5. Step 5: Solve for x
    x = 62,780,427,401.28/205,165.60
  6. Step 6: Final answer
    x = 305,998.80

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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.