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Finding the Fourth Proportional to 379,323.16, 568,907.51 and 139,354.59

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Solution

The fourth proportional to 379,323.16, 568,907.51 and 139,354.59 is: 209,003.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,323.16 : 568,907.51 = 139,354.59 : x
  2. Step 2: Convert to fraction form
    379,323.16/568,907.51 = 139,354.59/x
  3. Step 3: Cross multiply
    379,323.16x = 568,907.51 × 139,354.59
  4. Step 4: Simplify right side
    379,323.16x = 79,279,872,803.97
  5. Step 5: Solve for x
    x = 79,279,872,803.97/379,323.16
  6. Step 6: Final answer
    x = 209,003.51

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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.