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Finding the Fourth Proportional to 328,367.52, 492,533.46 and 128,723.58

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Solution

The fourth proportional to 328,367.52, 492,533.46 and 128,723.58 is: 193,078.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,367.52 : 492,533.46 = 128,723.58 : x
  2. Step 2: Convert to fraction form
    328,367.52/492,533.46 = 128,723.58/x
  3. Step 3: Cross multiply
    328,367.52x = 492,533.46 × 128,723.58
  4. Step 4: Simplify right side
    328,367.52x = 63,400,670,240.99
  5. Step 5: Solve for x
    x = 63,400,670,240.99/328,367.52
  6. Step 6: Final answer
    x = 193,078.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.