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Finding the Fourth Proportional to 493,846.80, 681,498.81 and 276,054.45

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Solution

The fourth proportional to 493,846.80, 681,498.81 and 276,054.45 is: 380,949.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,846.80 : 681,498.81 = 276,054.45 : x
  2. Step 2: Convert to fraction form
    493,846.80/681,498.81 = 276,054.45/x
  3. Step 3: Cross multiply
    493,846.80x = 681,498.81 × 276,054.45
  4. Step 4: Simplify right side
    493,846.80x = 188,130,779,170.21
  5. Step 5: Solve for x
    x = 188,130,779,170.21/493,846.80
  6. Step 6: Final answer
    x = 380,949.68

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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.