Home / 258,918.53-388,416.06-132,630.21

Finding the Fourth Proportional to 258,918.53, 388,416.06 and 132,630.21

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Solution

The fourth proportional to 258,918.53, 388,416.06 and 132,630.21 is: 198,964.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,918.53 : 388,416.06 = 132,630.21 : x
  2. Step 2: Convert to fraction form
    258,918.53/388,416.06 = 132,630.21/x
  3. Step 3: Cross multiply
    258,918.53x = 388,416.06 × 132,630.21
  4. Step 4: Simplify right side
    258,918.53x = 51,515,703,605.17
  5. Step 5: Solve for x
    x = 51,515,703,605.17/258,918.53
  6. Step 6: Final answer
    x = 198,964.92

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1.5x scale

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.