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Finding the Fourth Proportional to 326,154.40, 488,648.40 and 275,999.20

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Solution

The fourth proportional to 326,154.40, 488,648.40 and 275,999.20 is: 413,505.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,154.40 : 488,648.40 = 275,999.20 : x
  2. Step 2: Convert to fraction form
    326,154.40/488,648.40 = 275,999.20/x
  3. Step 3: Cross multiply
    326,154.40x = 488,648.40 × 275,999.20
  4. Step 4: Simplify right side
    326,154.40x = 134,866,567,481.28
  5. Step 5: Solve for x
    x = 134,866,567,481.28/326,154.40
  6. Step 6: Final answer
    x = 413,505.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.