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Finding the Fourth Proportional to 398,199.44, 550,052.76 and 318,188.24

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Solution

The fourth proportional to 398,199.44, 550,052.76 and 318,188.24 is: 439,529.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,199.44 : 550,052.76 = 318,188.24 : x
  2. Step 2: Convert to fraction form
    398,199.44/550,052.76 = 318,188.24/x
  3. Step 3: Cross multiply
    398,199.44x = 550,052.76 × 318,188.24
  4. Step 4: Simplify right side
    398,199.44x = 175,020,319,611.54
  5. Step 5: Solve for x
    x = 175,020,319,611.54/398,199.44
  6. Step 6: Final answer
    x = 439,529.30

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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.