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Finding the Fourth Proportional to 290,057.70, 400,303.73 and 161,008.29

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Solution

The fourth proportional to 290,057.70, 400,303.73 and 161,008.29 is: 222,204.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,057.70 : 400,303.73 = 161,008.29 : x
  2. Step 2: Convert to fraction form
    290,057.70/400,303.73 = 161,008.29/x
  3. Step 3: Cross multiply
    290,057.70x = 400,303.73 × 161,008.29
  4. Step 4: Simplify right side
    290,057.70x = 64,452,219,047.92
  5. Step 5: Solve for x
    x = 64,452,219,047.92/290,057.70
  6. Step 6: Final answer
    x = 222,204.82

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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.