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Finding the Fourth Proportional to 253,446.50, 380,154.99 and 66,457.94

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Solution

The fourth proportional to 253,446.50, 380,154.99 and 66,457.94 is: 99,683.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,446.50 : 380,154.99 = 66,457.94 : x
  2. Step 2: Convert to fraction form
    253,446.50/380,154.99 = 66,457.94/x
  3. Step 3: Cross multiply
    253,446.50x = 380,154.99 × 66,457.94
  4. Step 4: Simplify right side
    253,446.50x = 25,264,317,516.12
  5. Step 5: Solve for x
    x = 25,264,317,516.12/253,446.50
  6. Step 6: Final answer
    x = 99,683.04

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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.