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Finding the Fourth Proportional to 377,097.15, 520,245.90 and 215,865.39

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Solution

The fourth proportional to 377,097.15, 520,245.90 and 215,865.39 is: 297,809.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,097.15 : 520,245.90 = 215,865.39 : x
  2. Step 2: Convert to fraction form
    377,097.15/520,245.90 = 215,865.39/x
  3. Step 3: Cross multiply
    377,097.15x = 520,245.90 × 215,865.39
  4. Step 4: Simplify right side
    377,097.15x = 112,303,084,099.40
  5. Step 5: Solve for x
    x = 112,303,084,099.40/377,097.15
  6. Step 6: Final answer
    x = 297,809.42

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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.