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Finding the Fourth Proportional to 411,892.40, 568,012.16 and 321,215.34

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Solution

The fourth proportional to 411,892.40, 568,012.16 and 321,215.34 is: 442,965.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,892.40 : 568,012.16 = 321,215.34 : x
  2. Step 2: Convert to fraction form
    411,892.40/568,012.16 = 321,215.34/x
  3. Step 3: Cross multiply
    411,892.40x = 568,012.16 × 321,215.34
  4. Step 4: Simplify right side
    411,892.40x = 182,454,219,098.53
  5. Step 5: Solve for x
    x = 182,454,219,098.53/411,892.40
  6. Step 6: Final answer
    x = 442,965.73

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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.