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Finding the Fourth Proportional to 330,357.60, 493,039.92 and 298,471.20

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Solution

The fourth proportional to 330,357.60, 493,039.92 and 298,471.20 is: 445,451.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,357.60 : 493,039.92 = 298,471.20 : x
  2. Step 2: Convert to fraction form
    330,357.60/493,039.92 = 298,471.20/x
  3. Step 3: Cross multiply
    330,357.60x = 493,039.92 × 298,471.20
  4. Step 4: Simplify right side
    330,357.60x = 147,158,216,570.30
  5. Step 5: Solve for x
    x = 147,158,216,570.30/330,357.60
  6. Step 6: Final answer
    x = 445,451.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.