Home / 400,745.28-553,021.79-216,982.37

Finding the Fourth Proportional to 400,745.28, 553,021.79 and 216,982.37

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Solution

The fourth proportional to 400,745.28, 553,021.79 and 216,982.37 is: 299,432.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,745.28 : 553,021.79 = 216,982.37 : x
  2. Step 2: Convert to fraction form
    400,745.28/553,021.79 = 216,982.37/x
  3. Step 3: Cross multiply
    400,745.28x = 553,021.79 × 216,982.37
  4. Step 4: Simplify right side
    400,745.28x = 119,995,978,113.39
  5. Step 5: Solve for x
    x = 119,995,978,113.39/400,745.28
  6. Step 6: Final answer
    x = 299,432.04

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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.