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Finding the Fourth Proportional to 340,481.61, 469,860.21 and 187,516.89

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Solution

The fourth proportional to 340,481.61, 469,860.21 and 187,516.89 is: 258,770.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,481.61 : 469,860.21 = 187,516.89 : x
  2. Step 2: Convert to fraction form
    340,481.61/469,860.21 = 187,516.89/x
  3. Step 3: Cross multiply
    340,481.61x = 469,860.21 × 187,516.89
  4. Step 4: Simplify right side
    340,481.61x = 88,106,725,313.95
  5. Step 5: Solve for x
    x = 88,106,725,313.95/340,481.61
  6. Step 6: Final answer
    x = 258,770.88

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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.