Home / 419,135.47-578,420.00-228,161.59

Finding the Fourth Proportional to 419,135.47, 578,420.00 and 228,161.59

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Solution

The fourth proportional to 419,135.47, 578,420.00 and 228,161.59 is: 314,870.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,135.47 : 578,420.00 = 228,161.59 : x
  2. Step 2: Convert to fraction form
    419,135.47/578,420.00 = 228,161.59/x
  3. Step 3: Cross multiply
    419,135.47x = 578,420.00 × 228,161.59
  4. Step 4: Simplify right side
    419,135.47x = 131,973,225,746.99
  5. Step 5: Solve for x
    x = 131,973,225,746.99/419,135.47
  6. Step 6: Final answer
    x = 314,870.10

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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.