Home / 811,843.56-1,217,671.71-212,852.28

Finding the Fourth Proportional to 811,843.56, 1,217,671.71 and 212,852.28

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Solution

The fourth proportional to 811,843.56, 1,217,671.71 and 212,852.28 is: 319,253.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,843.56 : 1,217,671.71 = 212,852.28 : x
  2. Step 2: Convert to fraction form
    811,843.56/1,217,671.71 = 212,852.28/x
  3. Step 3: Cross multiply
    811,843.56x = 1,217,671.71 × 212,852.28
  4. Step 4: Simplify right side
    811,843.56x = 259,184,200,707.02
  5. Step 5: Solve for x
    x = 259,184,200,707.02/811,843.56
  6. Step 6: Final answer
    x = 319,253.87

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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.