Home / 253,668.06-380,387.40-76,140.36

Finding the Fourth Proportional to 253,668.06, 380,387.40 and 76,140.36

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Solution

The fourth proportional to 253,668.06, 380,387.40 and 76,140.36 is: 114,176.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,668.06 : 380,387.40 = 76,140.36 : x
  2. Step 2: Convert to fraction form
    253,668.06/380,387.40 = 76,140.36/x
  3. Step 3: Cross multiply
    253,668.06x = 380,387.40 × 76,140.36
  4. Step 4: Simplify right side
    253,668.06x = 28,962,833,575.46
  5. Step 5: Solve for x
    x = 28,962,833,575.46/253,668.06
  6. Step 6: Final answer
    x = 114,176.11

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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.