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Finding the Fourth Proportional to 330,725.56, 496,088.28 and 81,407.56

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Solution

The fourth proportional to 330,725.56, 496,088.28 and 81,407.56 is: 122,111.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,725.56 : 496,088.28 = 81,407.56 : x
  2. Step 2: Convert to fraction form
    330,725.56/496,088.28 = 81,407.56/x
  3. Step 3: Cross multiply
    330,725.56x = 496,088.28 × 81,407.56
  4. Step 4: Simplify right side
    330,725.56x = 40,385,336,419.40
  5. Step 5: Solve for x
    x = 40,385,336,419.40/330,725.56
  6. Step 6: Final answer
    x = 122,111.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.