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Finding the Fourth Proportional to 245,378.37, 338,622.67 and 137,949.28

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Solution

The fourth proportional to 245,378.37, 338,622.67 and 137,949.28 is: 190,370.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,378.37 : 338,622.67 = 137,949.28 : x
  2. Step 2: Convert to fraction form
    245,378.37/338,622.67 = 137,949.28/x
  3. Step 3: Cross multiply
    245,378.37x = 338,622.67 × 137,949.28
  4. Step 4: Simplify right side
    245,378.37x = 46,712,754,184.42
  5. Step 5: Solve for x
    x = 46,712,754,184.42/245,378.37
  6. Step 6: Final answer
    x = 190,370.30

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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.