Home / 387,541.40-534,742.46-215,454.56

Finding the Fourth Proportional to 387,541.40, 534,742.46 and 215,454.56

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Solution

The fourth proportional to 387,541.40, 534,742.46 and 215,454.56 is: 297,291.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,541.40 : 534,742.46 = 215,454.56 : x
  2. Step 2: Convert to fraction form
    387,541.40/534,742.46 = 215,454.56/x
  3. Step 3: Cross multiply
    387,541.40x = 534,742.46 × 215,454.56
  4. Step 4: Simplify right side
    387,541.40x = 115,212,701,432.62
  5. Step 5: Solve for x
    x = 115,212,701,432.62/387,541.40
  6. Step 6: Final answer
    x = 297,291.34

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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.