Home / 382,939.99-528,528.05-221,795

Finding the Fourth Proportional to 382,939.99, 528,528.05 and 221,795

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Solution

The fourth proportional to 382,939.99, 528,528.05 and 221,795 is: 306,118.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,939.99 : 528,528.05 = 221,795 : x
  2. Step 2: Convert to fraction form
    382,939.99/528,528.05 = 221,795/x
  3. Step 3: Cross multiply
    382,939.99x = 528,528.05 × 221,795
  4. Step 4: Simplify right side
    382,939.99x = 117,224,878,849.75
  5. Step 5: Solve for x
    x = 117,224,878,849.75/382,939.99
  6. Step 6: Final answer
    x = 306,118.14

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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.