Home / 419,031.50-578,252.39-228,040.79

Finding the Fourth Proportional to 419,031.50, 578,252.39 and 228,040.79

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Solution

The fourth proportional to 419,031.50, 578,252.39 and 228,040.79 is: 314,690.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,031.50 : 578,252.39 = 228,040.79 : x
  2. Step 2: Convert to fraction form
    419,031.50/578,252.39 = 228,040.79/x
  3. Step 3: Cross multiply
    419,031.50x = 578,252.39 × 228,040.79
  4. Step 4: Simplify right side
    419,031.50x = 131,865,131,834.99
  5. Step 5: Solve for x
    x = 131,865,131,834.99/419,031.50
  6. Step 6: Final answer
    x = 314,690.26

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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.