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Finding the Fourth Proportional to 290,817.72, 401,329.08 and 163,494.36

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Solution

The fourth proportional to 290,817.72, 401,329.08 and 163,494.36 is: 225,622.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,817.72 : 401,329.08 = 163,494.36 : x
  2. Step 2: Convert to fraction form
    290,817.72/401,329.08 = 163,494.36/x
  3. Step 3: Cross multiply
    290,817.72x = 401,329.08 × 163,494.36
  4. Step 4: Simplify right side
    290,817.72x = 65,615,041,083.99
  5. Step 5: Solve for x
    x = 65,615,041,083.99/290,817.72
  6. Step 6: Final answer
    x = 225,622.57

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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.