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Finding the Fourth Proportional to 331,202.40, 496,803.60 and 278,058.30

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Solution

The fourth proportional to 331,202.40, 496,803.60 and 278,058.30 is: 417,087.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,202.40 : 496,803.60 = 278,058.30 : x
  2. Step 2: Convert to fraction form
    331,202.40/496,803.60 = 278,058.30/x
  3. Step 3: Cross multiply
    331,202.40x = 496,803.60 × 278,058.30
  4. Step 4: Simplify right side
    331,202.40x = 138,140,364,449.88
  5. Step 5: Solve for x
    x = 138,140,364,449.88/331,202.40
  6. Step 6: Final answer
    x = 417,087.45

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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.