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Finding the Fourth Proportional to 306,731.20, 460,096.80 and 212,252.80

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Solution

The fourth proportional to 306,731.20, 460,096.80 and 212,252.80 is: 318,379.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,731.20 : 460,096.80 = 212,252.80 : x
  2. Step 2: Convert to fraction form
    306,731.20/460,096.80 = 212,252.80/x
  3. Step 3: Cross multiply
    306,731.20x = 460,096.80 × 212,252.80
  4. Step 4: Simplify right side
    306,731.20x = 97,656,834,071.04
  5. Step 5: Solve for x
    x = 97,656,834,071.04/306,731.20
  6. Step 6: Final answer
    x = 318,379.20

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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.