Home / 389,384.12-584,179.68-123,149.36

Finding the Fourth Proportional to 389,384.12, 584,179.68 and 123,149.36

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Solution

The fourth proportional to 389,384.12, 584,179.68 and 123,149.36 is: 184,756.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,384.12 : 584,179.68 = 123,149.36 : x
  2. Step 2: Convert to fraction form
    389,384.12/584,179.68 = 123,149.36/x
  3. Step 3: Cross multiply
    389,384.12x = 584,179.68 × 123,149.36
  4. Step 4: Simplify right side
    389,384.12x = 71,941,353,717.00
  5. Step 5: Solve for x
    x = 71,941,353,717.00/389,384.12
  6. Step 6: Final answer
    x = 184,756.77

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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.