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Finding the Fourth Proportional to 397,503.89, 548,505.46 and 268,722.51

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Solution

The fourth proportional to 397,503.89, 548,505.46 and 268,722.51 is: 370,803.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,503.89 : 548,505.46 = 268,722.51 : x
  2. Step 2: Convert to fraction form
    397,503.89/548,505.46 = 268,722.51/x
  3. Step 3: Cross multiply
    397,503.89x = 548,505.46 × 268,722.51
  4. Step 4: Simplify right side
    397,503.89x = 147,395,763,959.91
  5. Step 5: Solve for x
    x = 147,395,763,959.91/397,503.89
  6. Step 6: Final answer
    x = 370,803.32

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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.