Home / 252,972.06-379,808.01-128,400.54

Finding the Fourth Proportional to 252,972.06, 379,808.01 and 128,400.54

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Solution

The fourth proportional to 252,972.06, 379,808.01 and 128,400.54 is: 192,778.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,972.06 : 379,808.01 = 128,400.54 : x
  2. Step 2: Convert to fraction form
    252,972.06/379,808.01 = 128,400.54/x
  3. Step 3: Cross multiply
    252,972.06x = 379,808.01 × 128,400.54
  4. Step 4: Simplify right side
    252,972.06x = 48,767,553,580.33
  5. Step 5: Solve for x
    x = 48,767,553,580.33/252,972.06
  6. Step 6: Final answer
    x = 192,778.42

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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.