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Finding the Fourth Proportional to 306,507.66, 422,976.51 and 172,371.66

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Solution

The fourth proportional to 306,507.66, 422,976.51 and 172,371.66 is: 237,870.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,507.66 : 422,976.51 = 172,371.66 : x
  2. Step 2: Convert to fraction form
    306,507.66/422,976.51 = 172,371.66/x
  3. Step 3: Cross multiply
    306,507.66x = 422,976.51 × 172,371.66
  4. Step 4: Simplify right side
    306,507.66x = 72,909,163,169.71
  5. Step 5: Solve for x
    x = 72,909,163,169.71/306,507.66
  6. Step 6: Final answer
    x = 237,870.61

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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.