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Finding the Fourth Proportional to 279,959.94, 386,106.75 and 236,565

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Solution

The fourth proportional to 279,959.94, 386,106.75 and 236,565 is: 326,258.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,959.94 : 386,106.75 = 236,565 : x
  2. Step 2: Convert to fraction form
    279,959.94/386,106.75 = 236,565/x
  3. Step 3: Cross multiply
    279,959.94x = 386,106.75 × 236,565
  4. Step 4: Simplify right side
    279,959.94x = 91,339,343,313.75
  5. Step 5: Solve for x
    x = 91,339,343,313.75/279,959.94
  6. Step 6: Final answer
    x = 326,258.62

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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.