Home / 387,977.82-581,991.32-121,748.84

Finding the Fourth Proportional to 387,977.82, 581,991.32 and 121,748.84

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Solution

The fourth proportional to 387,977.82, 581,991.32 and 121,748.84 is: 182,630.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,977.82 : 581,991.32 = 121,748.84 : x
  2. Step 2: Convert to fraction form
    387,977.82/581,991.32 = 121,748.84/x
  3. Step 3: Cross multiply
    387,977.82x = 581,991.32 × 121,748.84
  4. Step 4: Simplify right side
    387,977.82x = 70,856,767,676.95
  5. Step 5: Solve for x
    x = 70,856,767,676.95/387,977.82
  6. Step 6: Final answer
    x = 182,630.98

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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.