Home / 382,965.12-528,487.42-210,879.52

Finding the Fourth Proportional to 382,965.12, 528,487.42 and 210,879.52

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Solution

The fourth proportional to 382,965.12, 528,487.42 and 210,879.52 is: 291,011.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,965.12 : 528,487.42 = 210,879.52 : x
  2. Step 2: Convert to fraction form
    382,965.12/528,487.42 = 210,879.52/x
  3. Step 3: Cross multiply
    382,965.12x = 528,487.42 × 210,879.52
  4. Step 4: Simplify right side
    382,965.12x = 111,447,173,455.64
  5. Step 5: Solve for x
    x = 111,447,173,455.64/382,965.12
  6. Step 6: Final answer
    x = 291,011.29

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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.