Home / 397,395.28-548,408.06-216,109.18

Finding the Fourth Proportional to 397,395.28, 548,408.06 and 216,109.18

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Solution

The fourth proportional to 397,395.28, 548,408.06 and 216,109.18 is: 298,232.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,395.28 : 548,408.06 = 216,109.18 : x
  2. Step 2: Convert to fraction form
    397,395.28/548,408.06 = 216,109.18/x
  3. Step 3: Cross multiply
    397,395.28x = 548,408.06 × 216,109.18
  4. Step 4: Simplify right side
    397,395.28x = 118,516,016,151.99
  5. Step 5: Solve for x
    x = 118,516,016,151.99/397,395.28
  6. Step 6: Final answer
    x = 298,232.07

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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.