Home / 399,288.54-551,266.86-254,176.20

Finding the Fourth Proportional to 399,288.54, 551,266.86 and 254,176.20

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Solution

The fourth proportional to 399,288.54, 551,266.86 and 254,176.20 is: 350,921.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,288.54 : 551,266.86 = 254,176.20 : x
  2. Step 2: Convert to fraction form
    399,288.54/551,266.86 = 254,176.20/x
  3. Step 3: Cross multiply
    399,288.54x = 551,266.86 × 254,176.20
  4. Step 4: Simplify right side
    399,288.54x = 140,118,915,660.73
  5. Step 5: Solve for x
    x = 140,118,915,660.73/399,288.54
  6. Step 6: Final answer
    x = 350,921.46

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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.