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Finding the Fourth Proportional to 379,751.10, 569,291.41 and 143,259.86

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Solution

The fourth proportional to 379,751.10, 569,291.41 and 143,259.86 is: 214,763.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,751.10 : 569,291.41 = 143,259.86 : x
  2. Step 2: Convert to fraction form
    379,751.10/569,291.41 = 143,259.86/x
  3. Step 3: Cross multiply
    379,751.10x = 569,291.41 × 143,259.86
  4. Step 4: Simplify right side
    379,751.10x = 81,556,605,028.42
  5. Step 5: Solve for x
    x = 81,556,605,028.42/379,751.10
  6. Step 6: Final answer
    x = 214,763.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.