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Finding the Fourth Proportional to 306,685.88, 460,443.66 and 211,679.87

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Solution

The fourth proportional to 306,685.88, 460,443.66 and 211,679.87 is: 317,806.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,685.88 : 460,443.66 = 211,679.87 : x
  2. Step 2: Convert to fraction form
    306,685.88/460,443.66 = 211,679.87/x
  3. Step 3: Cross multiply
    306,685.88x = 460,443.66 × 211,679.87
  4. Step 4: Simplify right side
    306,685.88x = 97,466,651,788.91
  5. Step 5: Solve for x
    x = 97,466,651,788.91/306,685.88
  6. Step 6: Final answer
    x = 317,806.13

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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.