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Finding the Fourth Proportional to 312,817.04, 469,230.15 and 216,659.43

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Solution

The fourth proportional to 312,817.04, 469,230.15 and 216,659.43 is: 324,992.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,817.04 : 469,230.15 = 216,659.43 : x
  2. Step 2: Convert to fraction form
    312,817.04/469,230.15 = 216,659.43/x
  3. Step 3: Cross multiply
    312,817.04x = 469,230.15 × 216,659.43
  4. Step 4: Simplify right side
    312,817.04x = 101,663,136,837.82
  5. Step 5: Solve for x
    x = 101,663,136,837.82/312,817.04
  6. Step 6: Final answer
    x = 324,992.33

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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.