Home / 479,942.78-719,465.43-213,558.62

Finding the Fourth Proportional to 479,942.78, 719,465.43 and 213,558.62

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Solution

The fourth proportional to 479,942.78, 719,465.43 and 213,558.62 is: 320,138.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,942.78 : 719,465.43 = 213,558.62 : x
  2. Step 2: Convert to fraction form
    479,942.78/719,465.43 = 213,558.62/x
  3. Step 3: Cross multiply
    479,942.78x = 719,465.43 × 213,558.62
  4. Step 4: Simplify right side
    479,942.78x = 153,648,044,368.51
  5. Step 5: Solve for x
    x = 153,648,044,368.51/479,942.78
  6. Step 6: Final answer
    x = 320,138.26

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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.