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Finding the Fourth Proportional to 478,800.99, 660,738.15 and 263,936.43

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Solution

The fourth proportional to 478,800.99, 660,738.15 and 263,936.43 is: 364,228.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,800.99 : 660,738.15 = 263,936.43 : x
  2. Step 2: Convert to fraction form
    478,800.99/660,738.15 = 263,936.43/x
  3. Step 3: Cross multiply
    478,800.99x = 660,738.15 × 263,936.43
  4. Step 4: Simplify right side
    478,800.99x = 174,392,868,475.81
  5. Step 5: Solve for x
    x = 174,392,868,475.81/478,800.99
  6. Step 6: Final answer
    x = 364,228.30

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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.