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Finding the Fourth Proportional to 245,241.40, 338,443.14 and 137,811.10

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Solution

The fourth proportional to 245,241.40, 338,443.14 and 137,811.10 is: 190,184.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,241.40 : 338,443.14 = 137,811.10 : x
  2. Step 2: Convert to fraction form
    245,241.40/338,443.14 = 137,811.10/x
  3. Step 3: Cross multiply
    245,241.40x = 338,443.14 × 137,811.10
  4. Step 4: Simplify right side
    245,241.40x = 46,641,221,410.85
  5. Step 5: Solve for x
    x = 46,641,221,410.85/245,241.40
  6. Step 6: Final answer
    x = 190,184.94

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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.