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Finding the Fourth Proportional to 479,317.40, 661,516.59 and 275,367.94

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Solution

The fourth proportional to 479,317.40, 661,516.59 and 275,367.94 is: 380,041.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,317.40 : 661,516.59 = 275,367.94 : x
  2. Step 2: Convert to fraction form
    479,317.40/661,516.59 = 275,367.94/x
  3. Step 3: Cross multiply
    479,317.40x = 661,516.59 × 275,367.94
  4. Step 4: Simplify right side
    479,317.40x = 182,160,460,664.13
  5. Step 5: Solve for x
    x = 182,160,460,664.13/479,317.40
  6. Step 6: Final answer
    x = 380,041.41

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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.