Home / 368,836.34-552,643.05-128,821.29

Finding the Fourth Proportional to 368,836.34, 552,643.05 and 128,821.29

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Solution

The fourth proportional to 368,836.34, 552,643.05 and 128,821.29 is: 193,018.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,836.34 : 552,643.05 = 128,821.29 : x
  2. Step 2: Convert to fraction form
    368,836.34/552,643.05 = 128,821.29/x
  3. Step 3: Cross multiply
    368,836.34x = 552,643.05 × 128,821.29
  4. Step 4: Simplify right side
    368,836.34x = 71,192,189,021.20
  5. Step 5: Solve for x
    x = 71,192,189,021.20/368,836.34
  6. Step 6: Final answer
    x = 193,018.37

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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.