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Finding the Fourth Proportional to 377,149.57, 520,422.77 and 215,995.01

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Solution

The fourth proportional to 377,149.57, 520,422.77 and 215,995.01 is: 298,048.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,149.57 : 520,422.77 = 215,995.01 : x
  2. Step 2: Convert to fraction form
    377,149.57/520,422.77 = 215,995.01/x
  3. Step 3: Cross multiply
    377,149.57x = 520,422.77 × 215,995.01
  4. Step 4: Simplify right side
    377,149.57x = 112,408,719,348.25
  5. Step 5: Solve for x
    x = 112,408,719,348.25/377,149.57
  6. Step 6: Final answer
    x = 298,048.12

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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.