Home / 328,221.25-492,384.42-138,683.44

Finding the Fourth Proportional to 328,221.25, 492,384.42 and 138,683.44

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Solution

The fourth proportional to 328,221.25, 492,384.42 and 138,683.44 is: 208,047.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,221.25 : 492,384.42 = 138,683.44 : x
  2. Step 2: Convert to fraction form
    328,221.25/492,384.42 = 138,683.44/x
  3. Step 3: Cross multiply
    328,221.25x = 492,384.42 × 138,683.44
  4. Step 4: Simplify right side
    328,221.25x = 68,285,565,783.49
  5. Step 5: Solve for x
    x = 68,285,565,783.49/328,221.25
  6. Step 6: Final answer
    x = 208,047.37

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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.