Home / 419,156.64-578,436.18-228,171.42

Finding the Fourth Proportional to 419,156.64, 578,436.18 and 228,171.42

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Solution

The fourth proportional to 419,156.64, 578,436.18 and 228,171.42 is: 314,876.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,156.64 : 578,436.18 = 228,171.42 : x
  2. Step 2: Convert to fraction form
    419,156.64/578,436.18 = 228,171.42/x
  3. Step 3: Cross multiply
    419,156.64x = 578,436.18 × 228,171.42
  4. Step 4: Simplify right side
    419,156.64x = 131,982,604,569.98
  5. Step 5: Solve for x
    x = 131,982,604,569.98/419,156.64
  6. Step 6: Final answer
    x = 314,876.57

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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.