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Finding the Fourth Proportional to 485,398.12, 669,872.33 and 270,539.72

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Solution

The fourth proportional to 485,398.12, 669,872.33 and 270,539.72 is: 373,357.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,398.12 : 669,872.33 = 270,539.72 : x
  2. Step 2: Convert to fraction form
    485,398.12/669,872.33 = 270,539.72/x
  3. Step 3: Cross multiply
    485,398.12x = 669,872.33 × 270,539.72
  4. Step 4: Simplify right side
    485,398.12x = 181,227,073,302.45
  5. Step 5: Solve for x
    x = 181,227,073,302.45/485,398.12
  6. Step 6: Final answer
    x = 373,357.59

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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.