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Finding the Fourth Proportional to 247,879.45, 342,075.81 and 134,702.20

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Solution

The fourth proportional to 247,879.45, 342,075.81 and 134,702.20 is: 185,890.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,879.45 : 342,075.81 = 134,702.20 : x
  2. Step 2: Convert to fraction form
    247,879.45/342,075.81 = 134,702.20/x
  3. Step 3: Cross multiply
    247,879.45x = 342,075.81 × 134,702.20
  4. Step 4: Simplify right side
    247,879.45x = 46,078,364,173.78
  5. Step 5: Solve for x
    x = 46,078,364,173.78/247,879.45
  6. Step 6: Final answer
    x = 185,890.21

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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.