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Finding the Fourth Proportional to 324,328.65, 486,494.70 and 212,715.66

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Solution

The fourth proportional to 324,328.65, 486,494.70 and 212,715.66 is: 319,074.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,328.65 : 486,494.70 = 212,715.66 : x
  2. Step 2: Convert to fraction form
    324,328.65/486,494.70 = 212,715.66/x
  3. Step 3: Cross multiply
    324,328.65x = 486,494.70 × 212,715.66
  4. Step 4: Simplify right side
    324,328.65x = 103,485,041,197.00
  5. Step 5: Solve for x
    x = 103,485,041,197.00/324,328.65
  6. Step 6: Final answer
    x = 319,074.62

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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.