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Finding the Fourth Proportional to 413,729.20, 620,010.60 and 255,487.60

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Solution

The fourth proportional to 413,729.20, 620,010.60 and 255,487.60 is: 382,871.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,729.20 : 620,010.60 = 255,487.60 : x
  2. Step 2: Convert to fraction form
    413,729.20/620,010.60 = 255,487.60/x
  3. Step 3: Cross multiply
    413,729.20x = 620,010.60 × 255,487.60
  4. Step 4: Simplify right side
    413,729.20x = 158,405,020,168.56
  5. Step 5: Solve for x
    x = 158,405,020,168.56/413,729.20
  6. Step 6: Final answer
    x = 382,871.26

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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.