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Finding the Fourth Proportional to 252,963.54, 349,075.98 and 139,779

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Solution

The fourth proportional to 252,963.54, 349,075.98 and 139,779 is: 192,887.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,963.54 : 349,075.98 = 139,779 : x
  2. Step 2: Convert to fraction form
    252,963.54/349,075.98 = 139,779/x
  3. Step 3: Cross multiply
    252,963.54x = 349,075.98 × 139,779
  4. Step 4: Simplify right side
    252,963.54x = 48,793,491,408.42
  5. Step 5: Solve for x
    x = 48,793,491,408.42/252,963.54
  6. Step 6: Final answer
    x = 192,887.45

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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.