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Finding the Fourth Proportional to 383,222.94, 528,446.82 and 286,274.85

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Solution

The fourth proportional to 383,222.94, 528,446.82 and 286,274.85 is: 394,759.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,222.94 : 528,446.82 = 286,274.85 : x
  2. Step 2: Convert to fraction form
    383,222.94/528,446.82 = 286,274.85/x
  3. Step 3: Cross multiply
    383,222.94x = 528,446.82 × 286,274.85
  4. Step 4: Simplify right side
    383,222.94x = 151,281,034,128.48
  5. Step 5: Solve for x
    x = 151,281,034,128.48/383,222.94
  6. Step 6: Final answer
    x = 394,759.86

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1.5x scale

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.