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Finding the Fourth Proportional to 377,121.75, 520,353.57 and 211,555.23

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Solution

The fourth proportional to 377,121.75, 520,353.57 and 211,555.23 is: 291,904.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,121.75 : 520,353.57 = 211,555.23 : x
  2. Step 2: Convert to fraction form
    377,121.75/520,353.57 = 211,555.23/x
  3. Step 3: Cross multiply
    377,121.75x = 520,353.57 × 211,555.23
  4. Step 4: Simplify right side
    377,121.75x = 110,083,519,182.67
  5. Step 5: Solve for x
    x = 110,083,519,182.67/377,121.75
  6. Step 6: Final answer
    x = 291,904.46

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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.