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Finding the Fourth Proportional to 388,253.82, 535,794.09 and 216,174.18

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Solution

The fourth proportional to 388,253.82, 535,794.09 and 216,174.18 is: 298,322.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,253.82 : 535,794.09 = 216,174.18 : x
  2. Step 2: Convert to fraction form
    388,253.82/535,794.09 = 216,174.18/x
  3. Step 3: Cross multiply
    388,253.82x = 535,794.09 × 216,174.18
  4. Step 4: Simplify right side
    388,253.82x = 115,824,848,054.60
  5. Step 5: Solve for x
    x = 115,824,848,054.60/388,253.82
  6. Step 6: Final answer
    x = 298,322.49

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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.