Home / 306,138.51-422,476.20-168,323.25

Finding the Fourth Proportional to 306,138.51, 422,476.20 and 168,323.25

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Solution

The fourth proportional to 306,138.51, 422,476.20 and 168,323.25 is: 232,288.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,138.51 : 422,476.20 = 168,323.25 : x
  2. Step 2: Convert to fraction form
    306,138.51/422,476.20 = 168,323.25/x
  3. Step 3: Cross multiply
    306,138.51x = 422,476.20 × 168,323.25
  4. Step 4: Simplify right side
    306,138.51x = 71,112,567,031.65
  5. Step 5: Solve for x
    x = 71,112,567,031.65/306,138.51
  6. Step 6: Final answer
    x = 232,288.87

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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.