Home / 382,811.16-528,248.89-221,676.65

Finding the Fourth Proportional to 382,811.16, 528,248.89 and 221,676.65

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Solution

The fourth proportional to 382,811.16, 528,248.89 and 221,676.65 is: 305,896.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,811.16 : 528,248.89 = 221,676.65 : x
  2. Step 2: Convert to fraction form
    382,811.16/528,248.89 = 221,676.65/x
  3. Step 3: Cross multiply
    382,811.16x = 528,248.89 × 221,676.65
  4. Step 4: Simplify right side
    382,811.16x = 117,100,444,301.42
  5. Step 5: Solve for x
    x = 117,100,444,301.42/382,811.16
  6. Step 6: Final answer
    x = 305,896.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.