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Finding the Fourth Proportional to 388,712.03, 583,237.46 and 136,173.67

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Solution

The fourth proportional to 388,712.03, 583,237.46 and 136,173.67 is: 204,319.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,712.03 : 583,237.46 = 136,173.67 : x
  2. Step 2: Convert to fraction form
    388,712.03/583,237.46 = 136,173.67/x
  3. Step 3: Cross multiply
    388,712.03x = 583,237.46 × 136,173.67
  4. Step 4: Simplify right side
    388,712.03x = 79,421,585,409.68
  5. Step 5: Solve for x
    x = 79,421,585,409.68/388,712.03
  6. Step 6: Final answer
    x = 204,319.85

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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.