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Finding the Fourth Proportional to 321,704.60, 444,005.57 and 178,510.78

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Solution

The fourth proportional to 321,704.60, 444,005.57 and 178,510.78 is: 246,374.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,704.60 : 444,005.57 = 178,510.78 : x
  2. Step 2: Convert to fraction form
    321,704.60/444,005.57 = 178,510.78/x
  3. Step 3: Cross multiply
    321,704.60x = 444,005.57 × 178,510.78
  4. Step 4: Simplify right side
    321,704.60x = 79,259,779,738.17
  5. Step 5: Solve for x
    x = 79,259,779,738.17/321,704.60
  6. Step 6: Final answer
    x = 246,374.40

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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.