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Finding the Fourth Proportional to 245,464.52, 338,738.90 and 138,032.26

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Solution

The fourth proportional to 245,464.52, 338,738.90 and 138,032.26 is: 190,483.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,464.52 : 338,738.90 = 138,032.26 : x
  2. Step 2: Convert to fraction form
    245,464.52/338,738.90 = 138,032.26/x
  3. Step 3: Cross multiply
    245,464.52x = 338,738.90 × 138,032.26
  4. Step 4: Simplify right side
    245,464.52x = 46,756,894,379.91
  5. Step 5: Solve for x
    x = 46,756,894,379.91/245,464.52
  6. Step 6: Final answer
    x = 190,483.31

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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.