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Finding the Fourth Proportional to 382,847.32, 528,319.97 and 210,763.90

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Solution

The fourth proportional to 382,847.32, 528,319.97 and 210,763.90 is: 290,849.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,847.32 : 528,319.97 = 210,763.90 : x
  2. Step 2: Convert to fraction form
    382,847.32/528,319.97 = 210,763.90/x
  3. Step 3: Cross multiply
    382,847.32x = 528,319.97 × 210,763.90
  4. Step 4: Simplify right side
    382,847.32x = 111,350,778,512.39
  5. Step 5: Solve for x
    x = 111,350,778,512.39/382,847.32
  6. Step 6: Final answer
    x = 290,849.05

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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.