Home / 397,715.59-548,859.07-216,439.21

Finding the Fourth Proportional to 397,715.59, 548,859.07 and 216,439.21

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Solution

The fourth proportional to 397,715.59, 548,859.07 and 216,439.21 is: 298,692.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,715.59 : 548,859.07 = 216,439.21 : x
  2. Step 2: Convert to fraction form
    397,715.59/548,859.07 = 216,439.21/x
  3. Step 3: Cross multiply
    397,715.59x = 548,859.07 × 216,439.21
  4. Step 4: Simplify right side
    397,715.59x = 118,794,623,512.14
  5. Step 5: Solve for x
    x = 118,794,623,512.14/397,715.59
  6. Step 6: Final answer
    x = 298,692.40

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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.