Home / 245,756.28-339,143.59-138,326.88

Finding the Fourth Proportional to 245,756.28, 339,143.59 and 138,326.88

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Solution

The fourth proportional to 245,756.28, 339,143.59 and 138,326.88 is: 190,891.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,756.28 : 339,143.59 = 138,326.88 : x
  2. Step 2: Convert to fraction form
    245,756.28/339,143.59 = 138,326.88/x
  3. Step 3: Cross multiply
    245,756.28x = 339,143.59 × 138,326.88
  4. Step 4: Simplify right side
    245,756.28x = 46,912,674,676.70
  5. Step 5: Solve for x
    x = 46,912,674,676.70/245,756.28
  6. Step 6: Final answer
    x = 190,891.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.