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Finding the Fourth Proportional to 388,357.44, 536,098.44 and 261,106.80

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Solution

The fourth proportional to 388,357.44, 536,098.44 and 261,106.80 is: 360,438.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,357.44 : 536,098.44 = 261,106.80 : x
  2. Step 2: Convert to fraction form
    388,357.44/536,098.44 = 261,106.80/x
  3. Step 3: Cross multiply
    388,357.44x = 536,098.44 × 261,106.80
  4. Step 4: Simplify right side
    388,357.44x = 139,978,948,153.39
  5. Step 5: Solve for x
    x = 139,978,948,153.39/388,357.44
  6. Step 6: Final answer
    x = 360,438.44

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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.