Home / 291,485.36-436,849.32-131,443.76

Finding the Fourth Proportional to 291,485.36, 436,849.32 and 131,443.76

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Solution

The fourth proportional to 291,485.36, 436,849.32 and 131,443.76 is: 196,994.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,485.36 : 436,849.32 = 131,443.76 : x
  2. Step 2: Convert to fraction form
    291,485.36/436,849.32 = 131,443.76/x
  3. Step 3: Cross multiply
    291,485.36x = 436,849.32 × 131,443.76
  4. Step 4: Simplify right side
    291,485.36x = 57,421,117,174.24
  5. Step 5: Solve for x
    x = 57,421,117,174.24/291,485.36
  6. Step 6: Final answer
    x = 196,994.86

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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.