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Finding the Fourth Proportional to 321,603.46, 443,759.61 and 178,340.74

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Solution

The fourth proportional to 321,603.46, 443,759.61 and 178,340.74 is: 246,080.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,603.46 : 443,759.61 = 178,340.74 : x
  2. Step 2: Convert to fraction form
    321,603.46/443,759.61 = 178,340.74/x
  3. Step 3: Cross multiply
    321,603.46x = 443,759.61 × 178,340.74
  4. Step 4: Simplify right side
    321,603.46x = 79,140,417,229.51
  5. Step 5: Solve for x
    x = 79,140,417,229.51/321,603.46
  6. Step 6: Final answer
    x = 246,080.74

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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.