Home / 280,315.23-420,528.33-102,823.79

Finding the Fourth Proportional to 280,315.23, 420,528.33 and 102,823.79

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Solution

The fourth proportional to 280,315.23, 420,528.33 and 102,823.79 is: 154,256.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,315.23 : 420,528.33 = 102,823.79 : x
  2. Step 2: Convert to fraction form
    280,315.23/420,528.33 = 102,823.79/x
  3. Step 3: Cross multiply
    280,315.23x = 420,528.33 × 102,823.79
  4. Step 4: Simplify right side
    280,315.23x = 43,240,314,590.33
  5. Step 5: Solve for x
    x = 43,240,314,590.33/280,315.23
  6. Step 6: Final answer
    x = 154,256.03

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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.