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Finding the Fourth Proportional to 471,866.87, 651,240.56 and 278,329.25

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Solution

The fourth proportional to 471,866.87, 651,240.56 and 278,329.25 is: 384,132.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,866.87 : 651,240.56 = 278,329.25 : x
  2. Step 2: Convert to fraction form
    471,866.87/651,240.56 = 278,329.25/x
  3. Step 3: Cross multiply
    471,866.87x = 651,240.56 × 278,329.25
  4. Step 4: Simplify right side
    471,866.87x = 181,259,291,986.53
  5. Step 5: Solve for x
    x = 181,259,291,986.53/471,866.87
  6. Step 6: Final answer
    x = 384,132.27

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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.