Home / 245,622.72-338,935.20-138,190.44

Finding the Fourth Proportional to 245,622.72, 338,935.20 and 138,190.44

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Solution

The fourth proportional to 245,622.72, 338,935.20 and 138,190.44 is: 190,689.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,622.72 : 338,935.20 = 138,190.44 : x
  2. Step 2: Convert to fraction form
    245,622.72/338,935.20 = 138,190.44/x
  3. Step 3: Cross multiply
    245,622.72x = 338,935.20 × 138,190.44
  4. Step 4: Simplify right side
    245,622.72x = 46,837,604,419.49
  5. Step 5: Solve for x
    x = 46,837,604,419.49/245,622.72
  6. Step 6: Final answer
    x = 190,689.22

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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.