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Finding the Fourth Proportional to 377,093.86, 520,384.94 and 280,728.26

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Solution

The fourth proportional to 377,093.86, 520,384.94 and 280,728.26 is: 387,401.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,093.86 : 520,384.94 = 280,728.26 : x
  2. Step 2: Convert to fraction form
    377,093.86/520,384.94 = 280,728.26/x
  3. Step 3: Cross multiply
    377,093.86x = 520,384.94 × 280,728.26
  4. Step 4: Simplify right side
    377,093.86x = 146,086,758,736.40
  5. Step 5: Solve for x
    x = 146,086,758,736.40/377,093.86
  6. Step 6: Final answer
    x = 387,401.58

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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.