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Finding the Fourth Proportional to 493,072.60, 680,442.90 and 275,291.12

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Solution

The fourth proportional to 493,072.60, 680,442.90 and 275,291.12 is: 379,903.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,072.60 : 680,442.90 = 275,291.12 : x
  2. Step 2: Convert to fraction form
    493,072.60/680,442.90 = 275,291.12/x
  3. Step 3: Cross multiply
    493,072.60x = 680,442.90 × 275,291.12
  4. Step 4: Simplify right side
    493,072.60x = 187,319,888,037.05
  5. Step 5: Solve for x
    x = 187,319,888,037.05/493,072.60
  6. Step 6: Final answer
    x = 379,903.26

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1.5x scale

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.