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Finding the Fourth Proportional to 388,122.15, 535,594.62 and 216,034.41

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Solution

The fourth proportional to 388,122.15, 535,594.62 and 216,034.41 is: 298,119.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,122.15 : 535,594.62 = 216,034.41 : x
  2. Step 2: Convert to fraction form
    388,122.15/535,594.62 = 216,034.41/x
  3. Step 3: Cross multiply
    388,122.15x = 535,594.62 × 216,034.41
  4. Step 4: Simplify right side
    388,122.15x = 115,706,867,730.87
  5. Step 5: Solve for x
    x = 115,706,867,730.87/388,122.15
  6. Step 6: Final answer
    x = 298,119.72

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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.