Home / 280,629,758.77-387,271,572.98-155,190,442.64

Finding the Fourth Proportional to 280,629,758.77, 387,271,572.98 and 155,190,442.64

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Solution

The fourth proportional to 280,629,758.77, 387,271,572.98 and 155,190,442.64 is: 214,164,196.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,629,758.77 : 387,271,572.98 = 155,190,442.64 : x
  2. Step 2: Convert to fraction form
    280,629,758.77/387,271,572.98 = 155,190,442.64/x
  3. Step 3: Cross multiply
    280,629,758.77x = 387,271,572.98 × 155,190,442.64
  4. Step 4: Simplify right side
    280,629,758.77x = 60,100,846,832,993,136
  5. Step 5: Solve for x
    x = 60,100,846,832,993,136/280,629,758.77
  6. Step 6: Final answer
    x = 214,164,196.61

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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.