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Finding the Fourth Proportional to 471,800.20, 651,138.06 and 280,814.20

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Solution

The fourth proportional to 471,800.20, 651,138.06 and 280,814.20 is: 387,555.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,800.20 : 651,138.06 = 280,814.20 : x
  2. Step 2: Convert to fraction form
    471,800.20/651,138.06 = 280,814.20/x
  3. Step 3: Cross multiply
    471,800.20x = 651,138.06 × 280,814.20
  4. Step 4: Simplify right side
    471,800.20x = 182,848,813,408.45
  5. Step 5: Solve for x
    x = 182,848,813,408.45/471,800.20
  6. Step 6: Final answer
    x = 387,555.61

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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.