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Finding the Fourth Proportional to 306,073.64, 422,636.61 and 255,352.32

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Solution

The fourth proportional to 306,073.64, 422,636.61 and 255,352.32 is: 352,598.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,073.64 : 422,636.61 = 255,352.32 : x
  2. Step 2: Convert to fraction form
    306,073.64/422,636.61 = 255,352.32/x
  3. Step 3: Cross multiply
    306,073.64x = 422,636.61 × 255,352.32
  4. Step 4: Simplify right side
    306,073.64x = 107,921,240,308.49
  5. Step 5: Solve for x
    x = 107,921,240,308.49/306,073.64
  6. Step 6: Final answer
    x = 352,598.94

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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.