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Finding the Fourth Proportional to 290,351.71, 400,648.20 and 169,465.27

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Solution

The fourth proportional to 290,351.71, 400,648.20 and 169,465.27 is: 233,840.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,351.71 : 400,648.20 = 169,465.27 : x
  2. Step 2: Convert to fraction form
    290,351.71/400,648.20 = 169,465.27/x
  3. Step 3: Cross multiply
    290,351.71x = 400,648.20 × 169,465.27
  4. Step 4: Simplify right side
    290,351.71x = 67,895,955,388.01
  5. Step 5: Solve for x
    x = 67,895,955,388.01/290,351.71
  6. Step 6: Final answer
    x = 233,840.38

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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.