Home / 388,441.26-536,100.03-218,708.46

Finding the Fourth Proportional to 388,441.26, 536,100.03 and 218,708.46

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Solution

The fourth proportional to 388,441.26, 536,100.03 and 218,708.46 is: 301,846.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,441.26 : 536,100.03 = 218,708.46 : x
  2. Step 2: Convert to fraction form
    388,441.26/536,100.03 = 218,708.46/x
  3. Step 3: Cross multiply
    388,441.26x = 536,100.03 × 218,708.46
  4. Step 4: Simplify right side
    388,441.26x = 117,249,611,967.25
  5. Step 5: Solve for x
    x = 117,249,611,967.25/388,441.26
  6. Step 6: Final answer
    x = 301,846.44

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1.5x scale

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.