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Finding the Fourth Proportional to 252,841.60, 379,315.20 and 84,355.20

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Solution

The fourth proportional to 252,841.60, 379,315.20 and 84,355.20 is: 126,550.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,841.60 : 379,315.20 = 84,355.20 : x
  2. Step 2: Convert to fraction form
    252,841.60/379,315.20 = 84,355.20/x
  3. Step 3: Cross multiply
    252,841.60x = 379,315.20 × 84,355.20
  4. Step 4: Simplify right side
    252,841.60x = 31,997,209,559.04
  5. Step 5: Solve for x
    x = 31,997,209,559.04/252,841.60
  6. Step 6: Final answer
    x = 126,550.42

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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.