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Finding the Fourth Proportional to 388,439.54, 536,008.24 and 216,351.73

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Solution

The fourth proportional to 388,439.54, 536,008.24 and 216,351.73 is: 298,544.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,439.54 : 536,008.24 = 216,351.73 : x
  2. Step 2: Convert to fraction form
    388,439.54/536,008.24 = 216,351.73/x
  3. Step 3: Cross multiply
    388,439.54x = 536,008.24 × 216,351.73
  4. Step 4: Simplify right side
    388,439.54x = 115,966,310,018.26
  5. Step 5: Solve for x
    x = 115,966,310,018.26/388,439.54
  6. Step 6: Final answer
    x = 298,544.05

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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.