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Finding the Fourth Proportional to 290,317.70, 400,628.13 and 162,998.66

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Solution

The fourth proportional to 290,317.70, 400,628.13 and 162,998.66 is: 224,932.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,317.70 : 400,628.13 = 162,998.66 : x
  2. Step 2: Convert to fraction form
    290,317.70/400,628.13 = 162,998.66/x
  3. Step 3: Cross multiply
    290,317.70x = 400,628.13 × 162,998.66
  4. Step 4: Simplify right side
    290,317.70x = 65,301,846,345.17
  5. Step 5: Solve for x
    x = 65,301,846,345.17/290,317.70
  6. Step 6: Final answer
    x = 224,932.37

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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.