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Finding the Fourth Proportional to 280,208.77, 420,736.28 and 223,881.57

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Solution

The fourth proportional to 280,208.77, 420,736.28 and 223,881.57 is: 336,160.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,208.77 : 420,736.28 = 223,881.57 : x
  2. Step 2: Convert to fraction form
    280,208.77/420,736.28 = 223,881.57/x
  3. Step 3: Cross multiply
    280,208.77x = 420,736.28 × 223,881.57
  4. Step 4: Simplify right side
    280,208.77x = 94,195,097,802.95
  5. Step 5: Solve for x
    x = 94,195,097,802.95/280,208.77
  6. Step 6: Final answer
    x = 336,160.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.