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Finding the Fourth Proportional to 353,598.67, 487,745.81 and 215,714.60

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Solution

The fourth proportional to 353,598.67, 487,745.81 and 215,714.60 is: 297,551.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,598.67 : 487,745.81 = 215,714.60 : x
  2. Step 2: Convert to fraction form
    353,598.67/487,745.81 = 215,714.60/x
  3. Step 3: Cross multiply
    353,598.67x = 487,745.81 × 215,714.60
  4. Step 4: Simplify right side
    353,598.67x = 105,213,888,788.52
  5. Step 5: Solve for x
    x = 105,213,888,788.52/353,598.67
  6. Step 6: Final answer
    x = 297,551.71

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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.