Home / 388,187.06-535,574.48-218,388.38

Finding the Fourth Proportional to 388,187.06, 535,574.48 and 218,388.38

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Solution

The fourth proportional to 388,187.06, 535,574.48 and 218,388.38 is: 301,306.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,187.06 : 535,574.48 = 218,388.38 : x
  2. Step 2: Convert to fraction form
    388,187.06/535,574.48 = 218,388.38/x
  3. Step 3: Cross multiply
    388,187.06x = 535,574.48 × 218,388.38
  4. Step 4: Simplify right side
    388,187.06x = 116,963,239,286.73
  5. Step 5: Solve for x
    x = 116,963,239,286.73/388,187.06
  6. Step 6: Final answer
    x = 301,306.39

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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.