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Finding the Fourth Proportional to 306,991.04, 423,656.04 and 192,258.95

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Solution

The fourth proportional to 306,991.04, 423,656.04 and 192,258.95 is: 265,322.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,991.04 : 423,656.04 = 192,258.95 : x
  2. Step 2: Convert to fraction form
    306,991.04/423,656.04 = 192,258.95/x
  3. Step 3: Cross multiply
    306,991.04x = 423,656.04 × 192,258.95
  4. Step 4: Simplify right side
    306,991.04x = 81,451,663,293.28
  5. Step 5: Solve for x
    x = 81,451,663,293.28/306,991.04
  6. Step 6: Final answer
    x = 265,322.61

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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.