Home / 387,717.72-581,576.79-121,499.07

Finding the Fourth Proportional to 387,717.72, 581,576.79 and 121,499.07

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Solution

The fourth proportional to 387,717.72, 581,576.79 and 121,499.07 is: 182,248.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,717.72 : 581,576.79 = 121,499.07 : x
  2. Step 2: Convert to fraction form
    387,717.72/581,576.79 = 121,499.07/x
  3. Step 3: Cross multiply
    387,717.72x = 581,576.79 × 121,499.07
  4. Step 4: Simplify right side
    387,717.72x = 70,661,040,664.66
  5. Step 5: Solve for x
    x = 70,661,040,664.66/387,717.72
  6. Step 6: Final answer
    x = 182,248.67

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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.