Home / 265,902.75-398,923.38-78,914.25

Finding the Fourth Proportional to 265,902.75, 398,923.38 and 78,914.25

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Solution

The fourth proportional to 265,902.75, 398,923.38 and 78,914.25 is: 118,391.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,902.75 : 398,923.38 = 78,914.25 : x
  2. Step 2: Convert to fraction form
    265,902.75/398,923.38 = 78,914.25/x
  3. Step 3: Cross multiply
    265,902.75x = 398,923.38 × 78,914.25
  4. Step 4: Simplify right side
    265,902.75x = 31,480,739,340.17
  5. Step 5: Solve for x
    x = 31,480,739,340.17/265,902.75
  6. Step 6: Final answer
    x = 118,391.93

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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.