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Finding the Fourth Proportional to 514,145.80, 771,218.70 and 303,675.40

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Solution

The fourth proportional to 514,145.80, 771,218.70 and 303,675.40 is: 455,513.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,145.80 : 771,218.70 = 303,675.40 : x
  2. Step 2: Convert to fraction form
    514,145.80/771,218.70 = 303,675.40/x
  3. Step 3: Cross multiply
    514,145.80x = 771,218.70 × 303,675.40
  4. Step 4: Simplify right side
    514,145.80x = 234,200,147,209.98
  5. Step 5: Solve for x
    x = 234,200,147,209.98/514,145.80
  6. Step 6: Final answer
    x = 455,513.10

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Double scale
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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.