Home / 478,729.32-718,112.21-179,178.36

Finding the Fourth Proportional to 478,729.32, 718,112.21 and 179,178.36

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Solution

The fourth proportional to 478,729.32, 718,112.21 and 179,178.36 is: 268,774.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,729.32 : 718,112.21 = 179,178.36 : x
  2. Step 2: Convert to fraction form
    478,729.32/718,112.21 = 179,178.36/x
  3. Step 3: Cross multiply
    478,729.32x = 718,112.21 × 179,178.36
  4. Step 4: Simplify right side
    478,729.32x = 128,670,167,187.88
  5. Step 5: Solve for x
    x = 128,670,167,187.88/478,729.32
  6. Step 6: Final answer
    x = 268,774.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.