Home / 387,631.48-534,975.78-215,566.60

Finding the Fourth Proportional to 387,631.48, 534,975.78 and 215,566.60

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Solution

The fourth proportional to 387,631.48, 534,975.78 and 215,566.60 is: 297,506.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,631.48 : 534,975.78 = 215,566.60 : x
  2. Step 2: Convert to fraction form
    387,631.48/534,975.78 = 215,566.60/x
  3. Step 3: Cross multiply
    387,631.48x = 534,975.78 × 215,566.60
  4. Step 4: Simplify right side
    387,631.48x = 115,322,909,976.95
  5. Step 5: Solve for x
    x = 115,322,909,976.95/387,631.48
  6. Step 6: Final answer
    x = 297,506.56

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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.