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Finding the Fourth Proportional to 323,579.28, 485,370 and 98,938.88

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Solution

The fourth proportional to 323,579.28, 485,370 and 98,938.88 is: 148,408.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,579.28 : 485,370 = 98,938.88 : x
  2. Step 2: Convert to fraction form
    323,579.28/485,370 = 98,938.88/x
  3. Step 3: Cross multiply
    323,579.28x = 485,370 × 98,938.88
  4. Step 4: Simplify right side
    323,579.28x = 48,021,964,185.60
  5. Step 5: Solve for x
    x = 48,021,964,185.60/323,579.28
  6. Step 6: Final answer
    x = 148,408.65

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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.