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Finding the Fourth Proportional to 479,675.72, 719,388.23 and 142,625.63

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Solution

The fourth proportional to 479,675.72, 719,388.23 and 142,625.63 is: 213,901.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,675.72 : 719,388.23 = 142,625.63 : x
  2. Step 2: Convert to fraction form
    479,675.72/719,388.23 = 142,625.63/x
  3. Step 3: Cross multiply
    479,675.72x = 719,388.23 × 142,625.63
  4. Step 4: Simplify right side
    479,675.72x = 102,603,195,208.27
  5. Step 5: Solve for x
    x = 102,603,195,208.27/479,675.72
  6. Step 6: Final answer
    x = 213,901.17

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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.