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Finding the Fourth Proportional to 347,072.40, 520,608.60 and 326,077.20

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Solution

The fourth proportional to 347,072.40, 520,608.60 and 326,077.20 is: 489,115.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,072.40 : 520,608.60 = 326,077.20 : x
  2. Step 2: Convert to fraction form
    347,072.40/520,608.60 = 326,077.20/x
  3. Step 3: Cross multiply
    347,072.40x = 520,608.60 × 326,077.20
  4. Step 4: Simplify right side
    347,072.40x = 169,758,594,583.92
  5. Step 5: Solve for x
    x = 169,758,594,583.92/347,072.40
  6. Step 6: Final answer
    x = 489,115.80

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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.