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Finding the Fourth Proportional to 451,214.40, 676,821.60 and 170,740.80

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Solution

The fourth proportional to 451,214.40, 676,821.60 and 170,740.80 is: 256,111.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,214.40 : 676,821.60 = 170,740.80 : x
  2. Step 2: Convert to fraction form
    451,214.40/676,821.60 = 170,740.80/x
  3. Step 3: Cross multiply
    451,214.40x = 676,821.60 × 170,740.80
  4. Step 4: Simplify right side
    451,214.40x = 115,561,061,441.28
  5. Step 5: Solve for x
    x = 115,561,061,441.28/451,214.40
  6. Step 6: Final answer
    x = 256,111.20

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Similar ratio
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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.