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Finding the Fourth Proportional to 258,914.60, 388,384.70 and 134,498.60

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Solution

The fourth proportional to 258,914.60, 388,384.70 and 134,498.60 is: 201,754.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,914.60 : 388,384.70 = 134,498.60 : x
  2. Step 2: Convert to fraction form
    258,914.60/388,384.70 = 134,498.60/x
  3. Step 3: Cross multiply
    258,914.60x = 388,384.70 × 134,498.60
  4. Step 4: Simplify right side
    258,914.60x = 52,237,198,411.42
  5. Step 5: Solve for x
    x = 52,237,198,411.42/258,914.60
  6. Step 6: Final answer
    x = 201,754.55

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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.