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Finding the Fourth Proportional to 311,970.40, 467,725.20 and 124,885.60

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Solution

The fourth proportional to 311,970.40, 467,725.20 and 124,885.60 is: 187,236.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,970.40 : 467,725.20 = 124,885.60 : x
  2. Step 2: Convert to fraction form
    311,970.40/467,725.20 = 124,885.60/x
  3. Step 3: Cross multiply
    311,970.40x = 467,725.20 × 124,885.60
  4. Step 4: Simplify right side
    311,970.40x = 58,412,142,237.12
  5. Step 5: Solve for x
    x = 58,412,142,237.12/311,970.40
  6. Step 6: Final answer
    x = 187,236.17

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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.