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Finding the Fourth Proportional to 485,241.72, 669,624.55 and 270,377.21

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Solution

The fourth proportional to 485,241.72, 669,624.55 and 270,377.21 is: 373,115.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,241.72 : 669,624.55 = 270,377.21 : x
  2. Step 2: Convert to fraction form
    485,241.72/669,624.55 = 270,377.21/x
  3. Step 3: Cross multiply
    485,241.72x = 669,624.55 × 270,377.21
  4. Step 4: Simplify right side
    485,241.72x = 181,051,213,552.44
  5. Step 5: Solve for x
    x = 181,051,213,552.44/485,241.72
  6. Step 6: Final answer
    x = 373,115.51

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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.