Home / 285,708.48-428,558.36-69,569.24

Finding the Fourth Proportional to 285,708.48, 428,558.36 and 69,569.24

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Solution

The fourth proportional to 285,708.48, 428,558.36 and 69,569.24 is: 104,352.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,708.48 : 428,558.36 = 69,569.24 : x
  2. Step 2: Convert to fraction form
    285,708.48/428,558.36 = 69,569.24/x
  3. Step 3: Cross multiply
    285,708.48x = 428,558.36 × 69,569.24
  4. Step 4: Simplify right side
    285,708.48x = 29,814,476,910.21
  5. Step 5: Solve for x
    x = 29,814,476,910.21/285,708.48
  6. Step 6: Final answer
    x = 104,352.79

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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.