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Finding the Fourth Proportional to 291,380.88, 402,081.12 and 178,181.76

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Solution

The fourth proportional to 291,380.88, 402,081.12 and 178,181.76 is: 245,875.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,380.88 : 402,081.12 = 178,181.76 : x
  2. Step 2: Convert to fraction form
    291,380.88/402,081.12 = 178,181.76/x
  3. Step 3: Cross multiply
    291,380.88x = 402,081.12 × 178,181.76
  4. Step 4: Simplify right side
    291,380.88x = 71,643,521,624.37
  5. Step 5: Solve for x
    x = 71,643,521,624.37/291,380.88
  6. Step 6: Final answer
    x = 245,875.85

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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.