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Finding the Fourth Proportional to 265,846.40, 399,806.40 and 238,889.60

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Solution

The fourth proportional to 265,846.40, 399,806.40 and 238,889.60 is: 359,266.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,846.40 : 399,806.40 = 238,889.60 : x
  2. Step 2: Convert to fraction form
    265,846.40/399,806.40 = 238,889.60/x
  3. Step 3: Cross multiply
    265,846.40x = 399,806.40 × 238,889.60
  4. Step 4: Simplify right side
    265,846.40x = 95,509,590,973.44
  5. Step 5: Solve for x
    x = 95,509,590,973.44/265,846.40
  6. Step 6: Final answer
    x = 359,266.07

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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.