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Finding the Fourth Proportional to 290,458.37, 400,870.13 and 163,133.97

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Solution

The fourth proportional to 290,458.37, 400,870.13 and 163,133.97 is: 225,145.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,458.37 : 400,870.13 = 163,133.97 : x
  2. Step 2: Convert to fraction form
    290,458.37/400,870.13 = 163,133.97/x
  3. Step 3: Cross multiply
    290,458.37x = 400,870.13 × 163,133.97
  4. Step 4: Simplify right side
    290,458.37x = 65,395,534,945.65
  5. Step 5: Solve for x
    x = 65,395,534,945.65/290,458.37
  6. Step 6: Final answer
    x = 225,145.99

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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.