Home / 330,338.76-455,433.48-238,380.72

Finding the Fourth Proportional to 330,338.76, 455,433.48 and 238,380.72

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Solution

The fourth proportional to 330,338.76, 455,433.48 and 238,380.72 is: 328,652.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,338.76 : 455,433.48 = 238,380.72 : x
  2. Step 2: Convert to fraction form
    330,338.76/455,433.48 = 238,380.72/x
  3. Step 3: Cross multiply
    330,338.76x = 455,433.48 × 238,380.72
  4. Step 4: Simplify right side
    330,338.76x = 108,566,560,874.51
  5. Step 5: Solve for x
    x = 108,566,560,874.51/330,338.76
  6. Step 6: Final answer
    x = 328,652.20

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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.