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Finding the Fourth Proportional to 458,339.74, 687,528.25 and 218,330.26

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Solution

The fourth proportional to 458,339.74, 687,528.25 and 218,330.26 is: 327,504.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,339.74 : 687,528.25 = 218,330.26 : x
  2. Step 2: Convert to fraction form
    458,339.74/687,528.25 = 218,330.26/x
  3. Step 3: Cross multiply
    458,339.74x = 687,528.25 × 218,330.26
  4. Step 4: Simplify right side
    458,339.74x = 150,108,221,579.85
  5. Step 5: Solve for x
    x = 150,108,221,579.85/458,339.74
  6. Step 6: Final answer
    x = 327,504.27

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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.