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Finding the Fourth Proportional to 245,959.76, 339,434.96 and 137,064.21

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Solution

The fourth proportional to 245,959.76, 339,434.96 and 137,064.21 is: 189,154.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,959.76 : 339,434.96 = 137,064.21 : x
  2. Step 2: Convert to fraction form
    245,959.76/339,434.96 = 137,064.21/x
  3. Step 3: Cross multiply
    245,959.76x = 339,434.96 × 137,064.21
  4. Step 4: Simplify right side
    245,959.76x = 46,524,384,638.78
  5. Step 5: Solve for x
    x = 46,524,384,638.78/245,959.76
  6. Step 6: Final answer
    x = 189,154.46

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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.