Home / 382,665.20-528,080.38-210,578.40

Finding the Fourth Proportional to 382,665.20, 528,080.38 and 210,578.40

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Solution

The fourth proportional to 382,665.20, 528,080.38 and 210,578.40 is: 290,599.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,665.20 : 528,080.38 = 210,578.40 : x
  2. Step 2: Convert to fraction form
    382,665.20/528,080.38 = 210,578.40/x
  3. Step 3: Cross multiply
    382,665.20x = 528,080.38 × 210,578.40
  4. Step 4: Simplify right side
    382,665.20x = 111,202,320,965.35
  5. Step 5: Solve for x
    x = 111,202,320,965.35/382,665.20
  6. Step 6: Final answer
    x = 290,599.52

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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.