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Finding the Fourth Proportional to 259,242.51, 388,861.94 and 72,254.01

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Solution

The fourth proportional to 259,242.51, 388,861.94 and 72,254.01 is: 108,380.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,242.51 : 388,861.94 = 72,254.01 : x
  2. Step 2: Convert to fraction form
    259,242.51/388,861.94 = 72,254.01/x
  3. Step 3: Cross multiply
    259,242.51x = 388,861.94 × 72,254.01
  4. Step 4: Simplify right side
    259,242.51x = 28,096,834,140.11
  5. Step 5: Solve for x
    x = 28,096,834,140.11/259,242.51
  6. Step 6: Final answer
    x = 108,380.50

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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.