Home / 297,102.18-409,999.14-161,139.36

Finding the Fourth Proportional to 297,102.18, 409,999.14 and 161,139.36

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Solution

The fourth proportional to 297,102.18, 409,999.14 and 161,139.36 is: 222,371.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,102.18 : 409,999.14 = 161,139.36 : x
  2. Step 2: Convert to fraction form
    297,102.18/409,999.14 = 161,139.36/x
  3. Step 3: Cross multiply
    297,102.18x = 409,999.14 × 161,139.36
  4. Step 4: Simplify right side
    297,102.18x = 66,066,998,214.45
  5. Step 5: Solve for x
    x = 66,066,998,214.45/297,102.18
  6. Step 6: Final answer
    x = 222,371.30

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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.