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Finding the Fourth Proportional to 240,630.90, 332,078.48 and 138,648.46

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Solution

The fourth proportional to 240,630.90, 332,078.48 and 138,648.46 is: 191,339.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,630.90 : 332,078.48 = 138,648.46 : x
  2. Step 2: Convert to fraction form
    240,630.90/332,078.48 = 138,648.46/x
  3. Step 3: Cross multiply
    240,630.90x = 332,078.48 × 138,648.46
  4. Step 4: Simplify right side
    240,630.90x = 46,042,169,851.14
  5. Step 5: Solve for x
    x = 46,042,169,851.14/240,630.90
  6. Step 6: Final answer
    x = 191,339.39

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1.5x scale

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.