Home / 208,233.32-312,478.42-81,851.36

Finding the Fourth Proportional to 208,233.32, 312,478.42 and 81,851.36

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Solution

The fourth proportional to 208,233.32, 312,478.42 and 81,851.36 is: 122,827.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,233.32 : 312,478.42 = 81,851.36 : x
  2. Step 2: Convert to fraction form
    208,233.32/312,478.42 = 81,851.36/x
  3. Step 3: Cross multiply
    208,233.32x = 312,478.42 × 81,851.36
  4. Step 4: Simplify right side
    208,233.32x = 25,576,783,647.65
  5. Step 5: Solve for x
    x = 25,576,783,647.65/208,233.32
  6. Step 6: Final answer
    x = 122,827.53

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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.