Home / 387,738.39-581,607.79-121,519.64

Finding the Fourth Proportional to 387,738.39, 581,607.79 and 121,519.64

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Solution

The fourth proportional to 387,738.39, 581,607.79 and 121,519.64 is: 182,279.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,738.39 : 581,607.79 = 121,519.64 : x
  2. Step 2: Convert to fraction form
    387,738.39/581,607.79 = 121,519.64/x
  3. Step 3: Cross multiply
    387,738.39x = 581,607.79 × 121,519.64
  4. Step 4: Simplify right side
    387,738.39x = 70,676,765,746.36
  5. Step 5: Solve for x
    x = 70,676,765,746.36/387,738.39
  6. Step 6: Final answer
    x = 182,279.52

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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.