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Finding the Fourth Proportional to 389,600.04, 584,433.36 and 136,858.56

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Solution

The fourth proportional to 389,600.04, 584,433.36 and 136,858.56 is: 205,299.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,600.04 : 584,433.36 = 136,858.56 : x
  2. Step 2: Convert to fraction form
    389,600.04/584,433.36 = 136,858.56/x
  3. Step 3: Cross multiply
    389,600.04x = 584,433.36 × 136,858.56
  4. Step 4: Simplify right side
    389,600.04x = 79,984,708,065.56
  5. Step 5: Solve for x
    x = 79,984,708,065.56/389,600.04
  6. Step 6: Final answer
    x = 205,299.54

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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.