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Finding the Fourth Proportional to 388,711.03, 583,235.96 and 136,172.67

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Solution

The fourth proportional to 388,711.03, 583,235.96 and 136,172.67 is: 204,318.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,711.03 : 583,235.96 = 136,172.67 : x
  2. Step 2: Convert to fraction form
    388,711.03/583,235.96 = 136,172.67/x
  3. Step 3: Cross multiply
    388,711.03x = 583,235.96 × 136,172.67
  4. Step 4: Simplify right side
    388,711.03x = 79,420,797,232.35
  5. Step 5: Solve for x
    x = 79,420,797,232.35/388,711.03
  6. Step 6: Final answer
    x = 204,318.36

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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.