Home / 215,939.40-323,811.90-82,775.40

Finding the Fourth Proportional to 215,939.40, 323,811.90 and 82,775.40

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Solution

The fourth proportional to 215,939.40, 323,811.90 and 82,775.40 is: 124,125.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,939.40 : 323,811.90 = 82,775.40 : x
  2. Step 2: Convert to fraction form
    215,939.40/323,811.90 = 82,775.40/x
  3. Step 3: Cross multiply
    215,939.40x = 323,811.90 × 82,775.40
  4. Step 4: Simplify right side
    215,939.40x = 26,803,659,547.26
  5. Step 5: Solve for x
    x = 26,803,659,547.26/215,939.40
  6. Step 6: Final answer
    x = 124,125.84

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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.