Home / 320,065.61-479,786.39-127,882.75

Finding the Fourth Proportional to 320,065.61, 479,786.39 and 127,882.75

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Solution

The fourth proportional to 320,065.61, 479,786.39 and 127,882.75 is: 191,699.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,065.61 : 479,786.39 = 127,882.75 : x
  2. Step 2: Convert to fraction form
    320,065.61/479,786.39 = 127,882.75/x
  3. Step 3: Cross multiply
    320,065.61x = 479,786.39 × 127,882.75
  4. Step 4: Simplify right side
    320,065.61x = 61,356,402,506.05
  5. Step 5: Solve for x
    x = 61,356,402,506.05/320,065.61
  6. Step 6: Final answer
    x = 191,699.45

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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.