Home / 306,308.07-422,643.20-178,959.06

Finding the Fourth Proportional to 306,308.07, 422,643.20 and 178,959.06

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Solution

The fourth proportional to 306,308.07, 422,643.20 and 178,959.06 is: 246,927.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,308.07 : 422,643.20 = 178,959.06 : x
  2. Step 2: Convert to fraction form
    306,308.07/422,643.20 = 178,959.06/x
  3. Step 3: Cross multiply
    306,308.07x = 422,643.20 × 178,959.06
  4. Step 4: Simplify right side
    306,308.07x = 75,635,828,892.60
  5. Step 5: Solve for x
    x = 75,635,828,892.60/306,308.07
  6. Step 6: Final answer
    x = 246,927.31

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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.