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Finding the Fourth Proportional to 458,348.63, 687,541.37 and 218,339.15

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Solution

The fourth proportional to 458,348.63, 687,541.37 and 218,339.15 is: 327,517.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,348.63 : 687,541.37 = 218,339.15 : x
  2. Step 2: Convert to fraction form
    458,348.63/687,541.37 = 218,339.15/x
  3. Step 3: Cross multiply
    458,348.63x = 687,541.37 × 218,339.15
  4. Step 4: Simplify right side
    458,348.63x = 150,117,193,786.23
  5. Step 5: Solve for x
    x = 150,117,193,786.23/458,348.63
  6. Step 6: Final answer
    x = 327,517.50

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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.