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Finding the Fourth Proportional to 377,418.96, 520,850.62 and 216,304.89

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Solution

The fourth proportional to 377,418.96, 520,850.62 and 216,304.89 is: 298,507.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,418.96 : 520,850.62 = 216,304.89 : x
  2. Step 2: Convert to fraction form
    377,418.96/520,850.62 = 216,304.89/x
  3. Step 3: Cross multiply
    377,418.96x = 520,850.62 × 216,304.89
  4. Step 4: Simplify right side
    377,418.96x = 112,662,538,501.22
  5. Step 5: Solve for x
    x = 112,662,538,501.22/377,418.96
  6. Step 6: Final answer
    x = 298,507.89

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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.