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Finding the Fourth Proportional to 324,509.91, 450,114.83 and 315,878.55

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Solution

The fourth proportional to 324,509.91, 450,114.83 and 315,878.55 is: 438,142.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,509.91 : 450,114.83 = 315,878.55 : x
  2. Step 2: Convert to fraction form
    324,509.91/450,114.83 = 315,878.55/x
  3. Step 3: Cross multiply
    324,509.91x = 450,114.83 × 315,878.55
  4. Step 4: Simplify right side
    324,509.91x = 142,181,619,833.90
  5. Step 5: Solve for x
    x = 142,181,619,833.90/324,509.91
  6. Step 6: Final answer
    x = 438,142.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.