Home / 338,738.70-507,665.10-138,825.02

Finding the Fourth Proportional to 338,738.70, 507,665.10 and 138,825.02

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Solution

The fourth proportional to 338,738.70, 507,665.10 and 138,825.02 is: 208,056.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,738.70 : 507,665.10 = 138,825.02 : x
  2. Step 2: Convert to fraction form
    338,738.70/507,665.10 = 138,825.02/x
  3. Step 3: Cross multiply
    338,738.70x = 507,665.10 × 138,825.02
  4. Step 4: Simplify right side
    338,738.70x = 70,476,617,660.80
  5. Step 5: Solve for x
    x = 70,476,617,660.80/338,738.70
  6. Step 6: Final answer
    x = 208,056.00

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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.