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Finding the Fourth Proportional to 265,596.84, 398,395.26 and 78,608.34

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Solution

The fourth proportional to 265,596.84, 398,395.26 and 78,608.34 is: 117,912.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,596.84 : 398,395.26 = 78,608.34 : x
  2. Step 2: Convert to fraction form
    265,596.84/398,395.26 = 78,608.34/x
  3. Step 3: Cross multiply
    265,596.84x = 398,395.26 × 78,608.34
  4. Step 4: Simplify right side
    265,596.84x = 31,317,190,052.47
  5. Step 5: Solve for x
    x = 31,317,190,052.47/265,596.84
  6. Step 6: Final answer
    x = 117,912.51

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1.5x scale

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.