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Finding the Fourth Proportional to 376,540.60, 520,089.18 and 281,471.80

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Solution

The fourth proportional to 376,540.60, 520,089.18 and 281,471.80 is: 388,777.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,540.60 : 520,089.18 = 281,471.80 : x
  2. Step 2: Convert to fraction form
    376,540.60/520,089.18 = 281,471.80/x
  3. Step 3: Cross multiply
    376,540.60x = 520,089.18 × 281,471.80
  4. Step 4: Simplify right side
    376,540.60x = 146,390,437,655.12
  5. Step 5: Solve for x
    x = 146,390,437,655.12/376,540.60
  6. Step 6: Final answer
    x = 388,777.30

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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.