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Finding the Fourth Proportional to 272,894.73, 407,423.31 and 208,515.95

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Solution

The fourth proportional to 272,894.73, 407,423.31 and 208,515.95 is: 311,307.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,894.73 : 407,423.31 = 208,515.95 : x
  2. Step 2: Convert to fraction form
    272,894.73/407,423.31 = 208,515.95/x
  3. Step 3: Cross multiply
    272,894.73x = 407,423.31 × 208,515.95
  4. Step 4: Simplify right side
    272,894.73x = 84,954,256,499.68
  5. Step 5: Solve for x
    x = 84,954,256,499.68/272,894.73
  6. Step 6: Final answer
    x = 311,307.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.