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Finding the Fourth Proportional to 259,041.21, 388,583.67 and 72,052.71

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Solution

The fourth proportional to 259,041.21, 388,583.67 and 72,052.71 is: 108,085.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,041.21 : 388,583.67 = 72,052.71 : x
  2. Step 2: Convert to fraction form
    259,041.21/388,583.67 = 72,052.71/x
  3. Step 3: Cross multiply
    259,041.21x = 388,583.67 × 72,052.71
  4. Step 4: Simplify right side
    259,041.21x = 27,998,506,485.25
  5. Step 5: Solve for x
    x = 27,998,506,485.25/259,041.21
  6. Step 6: Final answer
    x = 108,085.14

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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.