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Finding the Fourth Proportional to 382,990.04, 528,505.22 and 210,874.44

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Solution

The fourth proportional to 382,990.04, 528,505.22 and 210,874.44 is: 290,995.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,990.04 : 528,505.22 = 210,874.44 : x
  2. Step 2: Convert to fraction form
    382,990.04/528,505.22 = 210,874.44/x
  3. Step 3: Cross multiply
    382,990.04x = 528,505.22 × 210,874.44
  4. Step 4: Simplify right side
    382,990.04x = 111,448,242,304.58
  5. Step 5: Solve for x
    x = 111,448,242,304.58/382,990.04
  6. Step 6: Final answer
    x = 290,995.15

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1.5x scale

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.