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Finding the Fourth Proportional to 312,658.26, 468,987.66 and 219,579.54

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Solution

The fourth proportional to 312,658.26, 468,987.66 and 219,579.54 is: 329,369.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,658.26 : 468,987.66 = 219,579.54 : x
  2. Step 2: Convert to fraction form
    312,658.26/468,987.66 = 219,579.54/x
  3. Step 3: Cross multiply
    312,658.26x = 468,987.66 × 219,579.54
  4. Step 4: Simplify right side
    312,658.26x = 102,980,094,648.48
  5. Step 5: Solve for x
    x = 102,980,094,648.48/312,658.26
  6. Step 6: Final answer
    x = 329,369.50

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1.5x scale

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.