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Finding the Fourth Proportional to 245,021.76, 367,441.92 and 87,207.84

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Solution

The fourth proportional to 245,021.76, 367,441.92 and 87,207.84 is: 130,779.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,021.76 : 367,441.92 = 87,207.84 : x
  2. Step 2: Convert to fraction form
    245,021.76/367,441.92 = 87,207.84/x
  3. Step 3: Cross multiply
    245,021.76x = 367,441.92 × 87,207.84
  4. Step 4: Simplify right side
    245,021.76x = 32,043,816,168.65
  5. Step 5: Solve for x
    x = 32,043,816,168.65/245,021.76
  6. Step 6: Final answer
    x = 130,779.47

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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.