Home / 389,961.80-583,958.55-256,117.40

Finding the Fourth Proportional to 389,961.80, 583,958.55 and 256,117.40

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Solution

The fourth proportional to 389,961.80, 583,958.55 and 256,117.40 is: 383,529.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,961.80 : 583,958.55 = 256,117.40 : x
  2. Step 2: Convert to fraction form
    389,961.80/583,958.55 = 256,117.40/x
  3. Step 3: Cross multiply
    389,961.80x = 583,958.55 × 256,117.40
  4. Step 4: Simplify right side
    389,961.80x = 149,561,945,533.77
  5. Step 5: Solve for x
    x = 149,561,945,533.77/389,961.80
  6. Step 6: Final answer
    x = 383,529.73

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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.