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Finding the Fourth Proportional to 236,738.40, 355,157.28 and 68,258.40

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Solution

The fourth proportional to 236,738.40, 355,157.28 and 68,258.40 is: 102,401.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,738.40 : 355,157.28 = 68,258.40 : x
  2. Step 2: Convert to fraction form
    236,738.40/355,157.28 = 68,258.40/x
  3. Step 3: Cross multiply
    236,738.40x = 355,157.28 × 68,258.40
  4. Step 4: Simplify right side
    236,738.40x = 24,242,467,681.15
  5. Step 5: Solve for x
    x = 24,242,467,681.15/236,738.40
  6. Step 6: Final answer
    x = 102,401.92

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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.