Home / 210,222.21-315,145.84-77,071.44

Finding the Fourth Proportional to 210,222.21, 315,145.84 and 77,071.44

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Solution

The fourth proportional to 210,222.21, 315,145.84 and 77,071.44 is: 115,538.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,222.21 : 315,145.84 = 77,071.44 : x
  2. Step 2: Convert to fraction form
    210,222.21/315,145.84 = 77,071.44/x
  3. Step 3: Cross multiply
    210,222.21x = 315,145.84 × 77,071.44
  4. Step 4: Simplify right side
    210,222.21x = 24,288,743,698.81
  5. Step 5: Solve for x
    x = 24,288,743,698.81/210,222.21
  6. Step 6: Final answer
    x = 115,538.43

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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.