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Finding the Fourth Proportional to 514,138.80, 771,208.20 and 303,668.40

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Solution

The fourth proportional to 514,138.80, 771,208.20 and 303,668.40 is: 455,502.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,138.80 : 771,208.20 = 303,668.40 : x
  2. Step 2: Convert to fraction form
    514,138.80/771,208.20 = 303,668.40/x
  3. Step 3: Cross multiply
    514,138.80x = 771,208.20 × 303,668.40
  4. Step 4: Simplify right side
    514,138.80x = 234,191,560,160.88
  5. Step 5: Solve for x
    x = 234,191,560,160.88/514,138.80
  6. Step 6: Final answer
    x = 455,502.60

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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.