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Finding the Fourth Proportional to 329,037.40, 493,685.70 and 129,323.80

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Solution

The fourth proportional to 329,037.40, 493,685.70 and 129,323.80 is: 194,036.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,037.40 : 493,685.70 = 129,323.80 : x
  2. Step 2: Convert to fraction form
    329,037.40/493,685.70 = 129,323.80/x
  3. Step 3: Cross multiply
    329,037.40x = 493,685.70 × 129,323.80
  4. Step 4: Simplify right side
    329,037.40x = 63,845,310,729.66
  5. Step 5: Solve for x
    x = 63,845,310,729.66/329,037.40
  6. Step 6: Final answer
    x = 194,036.64

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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.