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Finding the Fourth Proportional to 695,199.98, 959,152.92 and 389,231.30

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Solution

The fourth proportional to 695,199.98, 959,152.92 and 389,231.30 is: 537,014.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,199.98 : 959,152.92 = 389,231.30 : x
  2. Step 2: Convert to fraction form
    695,199.98/959,152.92 = 389,231.30/x
  3. Step 3: Cross multiply
    695,199.98x = 959,152.92 × 389,231.30
  4. Step 4: Simplify right side
    695,199.98x = 373,332,337,950.40
  5. Step 5: Solve for x
    x = 373,332,337,950.40/695,199.98
  6. Step 6: Final answer
    x = 537,014.31

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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.