Home / 331,826.40-497,739.60-313,855.20

Finding the Fourth Proportional to 331,826.40, 497,739.60 and 313,855.20

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Solution

The fourth proportional to 331,826.40, 497,739.60 and 313,855.20 is: 470,782.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,826.40 : 497,739.60 = 313,855.20 : x
  2. Step 2: Convert to fraction form
    331,826.40/497,739.60 = 313,855.20/x
  3. Step 3: Cross multiply
    331,826.40x = 497,739.60 × 313,855.20
  4. Step 4: Simplify right side
    331,826.40x = 156,218,161,705.92
  5. Step 5: Solve for x
    x = 156,218,161,705.92/331,826.40
  6. Step 6: Final answer
    x = 470,782.80

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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.