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Finding the Fourth Proportional to 507,173.38, 699,899.26 and 280,818.88

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Solution

The fourth proportional to 507,173.38, 699,899.26 and 280,818.88 is: 387,530.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,173.38 : 699,899.26 = 280,818.88 : x
  2. Step 2: Convert to fraction form
    507,173.38/699,899.26 = 280,818.88/x
  3. Step 3: Cross multiply
    507,173.38x = 699,899.26 × 280,818.88
  4. Step 4: Simplify right side
    507,173.38x = 196,544,926,306.03
  5. Step 5: Solve for x
    x = 196,544,926,306.03/507,173.38
  6. Step 6: Final answer
    x = 387,530.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.