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Finding the Fourth Proportional to 505,012.51, 696,913.23 and 275,564.62

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Solution

The fourth proportional to 505,012.51, 696,913.23 and 275,564.62 is: 380,276.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,012.51 : 696,913.23 = 275,564.62 : x
  2. Step 2: Convert to fraction form
    505,012.51/696,913.23 = 275,564.62/x
  3. Step 3: Cross multiply
    505,012.51x = 696,913.23 × 275,564.62
  4. Step 4: Simplify right side
    505,012.51x = 192,044,629,397.92
  5. Step 5: Solve for x
    x = 192,044,629,397.92/505,012.51
  6. Step 6: Final answer
    x = 380,276.97

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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.