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Finding the Fourth Proportional to 534,856.80, 737,920.32 and 305,249.76

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Solution

The fourth proportional to 534,856.80, 737,920.32 and 305,249.76 is: 421,140.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,856.80 : 737,920.32 = 305,249.76 : x
  2. Step 2: Convert to fraction form
    534,856.80/737,920.32 = 305,249.76/x
  3. Step 3: Cross multiply
    534,856.80x = 737,920.32 × 305,249.76
  4. Step 4: Simplify right side
    534,856.80x = 225,250,000,579.12
  5. Step 5: Solve for x
    x = 225,250,000,579.12/534,856.80
  6. Step 6: Final answer
    x = 421,140.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.