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Finding the Fourth Proportional to 388,906.01, 536,406.86 and 297,232.44

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Solution

The fourth proportional to 388,906.01, 536,406.86 and 297,232.44 is: 409,964.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,906.01 : 536,406.86 = 297,232.44 : x
  2. Step 2: Convert to fraction form
    388,906.01/536,406.86 = 297,232.44/x
  3. Step 3: Cross multiply
    388,906.01x = 536,406.86 × 297,232.44
  4. Step 4: Simplify right side
    388,906.01x = 159,437,516,890.16
  5. Step 5: Solve for x
    x = 159,437,516,890.16/388,906.01
  6. Step 6: Final answer
    x = 409,964.14

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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.