Home / 388,372.32-535,941.36-218,583.36

Finding the Fourth Proportional to 388,372.32, 535,941.36 and 218,583.36

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Solution

The fourth proportional to 388,372.32, 535,941.36 and 218,583.36 is: 301,638.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,372.32 : 535,941.36 = 218,583.36 : x
  2. Step 2: Convert to fraction form
    388,372.32/535,941.36 = 218,583.36/x
  3. Step 3: Cross multiply
    388,372.32x = 535,941.36 × 218,583.36
  4. Step 4: Simplify right side
    388,372.32x = 117,147,863,231.77
  5. Step 5: Solve for x
    x = 117,147,863,231.77/388,372.32
  6. Step 6: Final answer
    x = 301,638.03

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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.