Home / 419,178.11-578,465.87-228,191.45

Finding the Fourth Proportional to 419,178.11, 578,465.87 and 228,191.45

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Solution

The fourth proportional to 419,178.11, 578,465.87 and 228,191.45 is: 314,904.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,178.11 : 578,465.87 = 228,191.45 : x
  2. Step 2: Convert to fraction form
    419,178.11/578,465.87 = 228,191.45/x
  3. Step 3: Cross multiply
    419,178.11x = 578,465.87 × 228,191.45
  4. Step 4: Simplify right side
    419,178.11x = 132,000,961,617.53
  5. Step 5: Solve for x
    x = 132,000,961,617.53/419,178.11
  6. Step 6: Final answer
    x = 314,904.24

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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.