Home / 387,464.31-534,680.19-217,687.50

Finding the Fourth Proportional to 387,464.31, 534,680.19 and 217,687.50

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Solution

The fourth proportional to 387,464.31, 534,680.19 and 217,687.50 is: 300,397.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,464.31 : 534,680.19 = 217,687.50 : x
  2. Step 2: Convert to fraction form
    387,464.31/534,680.19 = 217,687.50/x
  3. Step 3: Cross multiply
    387,464.31x = 534,680.19 × 217,687.50
  4. Step 4: Simplify right side
    387,464.31x = 116,393,193,860.63
  5. Step 5: Solve for x
    x = 116,393,193,860.63/387,464.31
  6. Step 6: Final answer
    x = 300,397.20

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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.