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Finding the Fourth Proportional to 532,145.40, 798,444.90 and 279,619.80

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Solution

The fourth proportional to 532,145.40, 798,444.90 and 279,619.80 is: 419,548.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,145.40 : 798,444.90 = 279,619.80 : x
  2. Step 2: Convert to fraction form
    532,145.40/798,444.90 = 279,619.80/x
  3. Step 3: Cross multiply
    532,145.40x = 798,444.90 × 279,619.80
  4. Step 4: Simplify right side
    532,145.40x = 223,261,003,249.02
  5. Step 5: Solve for x
    x = 223,261,003,249.02/532,145.40
  6. Step 6: Final answer
    x = 419,548.87

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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.