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Finding the Fourth Proportional to 518,811, 778,240.38 and 158,956.08

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Solution

The fourth proportional to 518,811, 778,240.38 and 158,956.08 is: 238,441.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,811 : 778,240.38 = 158,956.08 : x
  2. Step 2: Convert to fraction form
    518,811/778,240.38 = 158,956.08/x
  3. Step 3: Cross multiply
    518,811x = 778,240.38 × 158,956.08
  4. Step 4: Simplify right side
    518,811x = 123,706,040,102.51
  5. Step 5: Solve for x
    x = 123,706,040,102.51/518,811
  6. Step 6: Final answer
    x = 238,441.44

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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.