Home / 379,149.53-522,986.05-288,306.34

Finding the Fourth Proportional to 379,149.53, 522,986.05 and 288,306.34

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Solution

The fourth proportional to 379,149.53, 522,986.05 and 288,306.34 is: 397,680.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,149.53 : 522,986.05 = 288,306.34 : x
  2. Step 2: Convert to fraction form
    379,149.53/522,986.05 = 288,306.34/x
  3. Step 3: Cross multiply
    379,149.53x = 522,986.05 × 288,306.34
  4. Step 4: Simplify right side
    379,149.53x = 150,780,193,946.56
  5. Step 5: Solve for x
    x = 150,780,193,946.56/379,149.53
  6. Step 6: Final answer
    x = 397,680.02

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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.