Home / 389,384.64-584,073.12-123,145.20

Finding the Fourth Proportional to 389,384.64, 584,073.12 and 123,145.20

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Solution

The fourth proportional to 389,384.64, 584,073.12 and 123,145.20 is: 184,716.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,384.64 : 584,073.12 = 123,145.20 : x
  2. Step 2: Convert to fraction form
    389,384.64/584,073.12 = 123,145.20/x
  3. Step 3: Cross multiply
    389,384.64x = 584,073.12 × 123,145.20
  4. Step 4: Simplify right side
    389,384.64x = 71,925,801,177.02
  5. Step 5: Solve for x
    x = 71,925,801,177.02/389,384.64
  6. Step 6: Final answer
    x = 184,716.59

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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.