Home / 389,938.20-584,907.30-109,455.45

Finding the Fourth Proportional to 389,938.20, 584,907.30 and 109,455.45

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Solution

The fourth proportional to 389,938.20, 584,907.30 and 109,455.45 is: 164,183.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,938.20 : 584,907.30 = 109,455.45 : x
  2. Step 2: Convert to fraction form
    389,938.20/584,907.30 = 109,455.45/x
  3. Step 3: Cross multiply
    389,938.20x = 584,907.30 × 109,455.45
  4. Step 4: Simplify right side
    389,938.20x = 64,021,291,729.79
  5. Step 5: Solve for x
    x = 64,021,291,729.79/389,938.20
  6. Step 6: Final answer
    x = 164,183.18

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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.