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Finding the Fourth Proportional to 311,573.40, 467,335.80 and 121,996.95

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Solution

The fourth proportional to 311,573.40, 467,335.80 and 121,996.95 is: 182,985.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,573.40 : 467,335.80 = 121,996.95 : x
  2. Step 2: Convert to fraction form
    311,573.40/467,335.80 = 121,996.95/x
  3. Step 3: Cross multiply
    311,573.40x = 467,335.80 × 121,996.95
  4. Step 4: Simplify right side
    311,573.40x = 57,013,542,225.81
  5. Step 5: Solve for x
    x = 57,013,542,225.81/311,573.40
  6. Step 6: Final answer
    x = 182,985.91

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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.