Home / 382,961.13-528,481.90-210,875.51

Finding the Fourth Proportional to 382,961.13, 528,481.90 and 210,875.51

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Solution

The fourth proportional to 382,961.13, 528,481.90 and 210,875.51 is: 291,005.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,961.13 : 528,481.90 = 210,875.51 : x
  2. Step 2: Convert to fraction form
    382,961.13/528,481.90 = 210,875.51/x
  3. Step 3: Cross multiply
    382,961.13x = 528,481.90 × 210,875.51
  4. Step 4: Simplify right side
    382,961.13x = 111,443,891,773.07
  5. Step 5: Solve for x
    x = 111,443,891,773.07/382,961.13
  6. Step 6: Final answer
    x = 291,005.76

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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.