Home / 419,157.22-578,437.03-228,172.05

Finding the Fourth Proportional to 419,157.22, 578,437.03 and 228,172.05

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Solution

The fourth proportional to 419,157.22, 578,437.03 and 228,172.05 is: 314,877.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,157.22 : 578,437.03 = 228,172.05 : x
  2. Step 2: Convert to fraction form
    419,157.22/578,437.03 = 228,172.05/x
  3. Step 3: Cross multiply
    419,157.22x = 578,437.03 × 228,172.05
  4. Step 4: Simplify right side
    419,157.22x = 131,983,162,931.01
  5. Step 5: Solve for x
    x = 131,983,162,931.01/419,157.22
  6. Step 6: Final answer
    x = 314,877.47

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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.