Home / 387,623.49-581,435.24-121,404.84

Finding the Fourth Proportional to 387,623.49, 581,435.24 and 121,404.84

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Solution

The fourth proportional to 387,623.49, 581,435.24 and 121,404.84 is: 182,107.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,623.49 : 581,435.24 = 121,404.84 : x
  2. Step 2: Convert to fraction form
    387,623.49/581,435.24 = 121,404.84/x
  3. Step 3: Cross multiply
    387,623.49x = 581,435.24 × 121,404.84
  4. Step 4: Simplify right side
    387,623.49x = 70,589,051,675.54
  5. Step 5: Solve for x
    x = 70,589,051,675.54/387,623.49
  6. Step 6: Final answer
    x = 182,107.26

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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.