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Finding the Fourth Proportional to 388,429.34, 536,059.44 and 235,473.98

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Solution

The fourth proportional to 388,429.34, 536,059.44 and 235,473.98 is: 324,970.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,429.34 : 536,059.44 = 235,473.98 : x
  2. Step 2: Convert to fraction form
    388,429.34/536,059.44 = 235,473.98/x
  3. Step 3: Cross multiply
    388,429.34x = 536,059.44 × 235,473.98
  4. Step 4: Simplify right side
    388,429.34x = 126,228,048,676.00
  5. Step 5: Solve for x
    x = 126,228,048,676.00/388,429.34
  6. Step 6: Final answer
    x = 324,970.43

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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.