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Finding the Fourth Proportional to 290,290.23, 400,530.40 and 169,362.49

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Solution

The fourth proportional to 290,290.23, 400,530.40 and 169,362.49 is: 233,679.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,290.23 : 400,530.40 = 169,362.49 : x
  2. Step 2: Convert to fraction form
    290,290.23/400,530.40 = 169,362.49/x
  3. Step 3: Cross multiply
    290,290.23x = 400,530.40 × 169,362.49
  4. Step 4: Simplify right side
    290,290.23x = 67,834,825,864.70
  5. Step 5: Solve for x
    x = 67,834,825,864.70/290,290.23
  6. Step 6: Final answer
    x = 233,679.33

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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.