Home / 397,100.10-548,002.40-215,812.05

Finding the Fourth Proportional to 397,100.10, 548,002.40 and 215,812.05

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Solution

The fourth proportional to 397,100.10, 548,002.40 and 215,812.05 is: 297,822.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,100.10 : 548,002.40 = 215,812.05 : x
  2. Step 2: Convert to fraction form
    397,100.10/548,002.40 = 215,812.05/x
  3. Step 3: Cross multiply
    397,100.10x = 548,002.40 × 215,812.05
  4. Step 4: Simplify right side
    397,100.10x = 118,265,520,859.22
  5. Step 5: Solve for x
    x = 118,265,520,859.22/397,100.10
  6. Step 6: Final answer
    x = 297,822.94

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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.