Home / 258,919.60-388,392.20-134,503.60

Finding the Fourth Proportional to 258,919.60, 388,392.20 and 134,503.60

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Solution

The fourth proportional to 258,919.60, 388,392.20 and 134,503.60 is: 201,762.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,919.60 : 388,392.20 = 134,503.60 : x
  2. Step 2: Convert to fraction form
    258,919.60/388,392.20 = 134,503.60/x
  3. Step 3: Cross multiply
    258,919.60x = 388,392.20 × 134,503.60
  4. Step 4: Simplify right side
    258,919.60x = 52,240,149,111.92
  5. Step 5: Solve for x
    x = 52,240,149,111.92/258,919.60
  6. Step 6: Final answer
    x = 201,762.05

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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.