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Finding the Fourth Proportional to 291,940.16, 437,751.28 and 131,828.48

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Solution

The fourth proportional to 291,940.16, 437,751.28 and 131,828.48 is: 197,670.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,940.16 : 437,751.28 = 131,828.48 : x
  2. Step 2: Convert to fraction form
    291,940.16/437,751.28 = 131,828.48/x
  3. Step 3: Cross multiply
    291,940.16x = 437,751.28 × 131,828.48
  4. Step 4: Simplify right side
    291,940.16x = 57,708,085,860.45
  5. Step 5: Solve for x
    x = 57,708,085,860.45/291,940.16
  6. Step 6: Final answer
    x = 197,670.94

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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.