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Finding the Fourth Proportional to 388,141.17, 535,634.67 and 216,055.41

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Solution

The fourth proportional to 388,141.17, 535,634.67 and 216,055.41 is: 298,156.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,141.17 : 535,634.67 = 216,055.41 : x
  2. Step 2: Convert to fraction form
    388,141.17/535,634.67 = 216,055.41/x
  3. Step 3: Cross multiply
    388,141.17x = 535,634.67 × 216,055.41
  4. Step 4: Simplify right side
    388,141.17x = 115,726,768,237.07
  5. Step 5: Solve for x
    x = 115,726,768,237.07/388,141.17
  6. Step 6: Final answer
    x = 298,156.39

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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.