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Finding the Fourth Proportional to 256,898.80, 385,348.20 and 225,794.80

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Solution

The fourth proportional to 256,898.80, 385,348.20 and 225,794.80 is: 338,692.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,898.80 : 385,348.20 = 225,794.80 : x
  2. Step 2: Convert to fraction form
    256,898.80/385,348.20 = 225,794.80/x
  3. Step 3: Cross multiply
    256,898.80x = 385,348.20 × 225,794.80
  4. Step 4: Simplify right side
    256,898.80x = 87,009,619,749.36
  5. Step 5: Solve for x
    x = 87,009,619,749.36/256,898.80
  6. Step 6: Final answer
    x = 338,692.20

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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.