Home / 388,063.28-535,438.68-218,235.44

Finding the Fourth Proportional to 388,063.28, 535,438.68 and 218,235.44

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Solution

The fourth proportional to 388,063.28, 535,438.68 and 218,235.44 is: 301,115.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,063.28 : 535,438.68 = 218,235.44 : x
  2. Step 2: Convert to fraction form
    388,063.28/535,438.68 = 218,235.44/x
  3. Step 3: Cross multiply
    388,063.28x = 535,438.68 × 218,235.44
  4. Step 4: Simplify right side
    388,063.28x = 116,851,695,922.82
  5. Step 5: Solve for x
    x = 116,851,695,922.82/388,063.28
  6. Step 6: Final answer
    x = 301,115.06

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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.