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Finding the Fourth Proportional to 630,536.80, 945,805.20 and 256,367.20

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Solution

The fourth proportional to 630,536.80, 945,805.20 and 256,367.20 is: 384,550.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,536.80 : 945,805.20 = 256,367.20 : x
  2. Step 2: Convert to fraction form
    630,536.80/945,805.20 = 256,367.20/x
  3. Step 3: Cross multiply
    630,536.80x = 945,805.20 × 256,367.20
  4. Step 4: Simplify right side
    630,536.80x = 242,473,430,869.44
  5. Step 5: Solve for x
    x = 242,473,430,869.44/630,536.80
  6. Step 6: Final answer
    x = 384,550.80

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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.