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Finding the Fourth Proportional to 417,900.24, 626,940.36 and 129,705.89

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Solution

The fourth proportional to 417,900.24, 626,940.36 and 129,705.89 is: 194,586.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,900.24 : 626,940.36 = 129,705.89 : x
  2. Step 2: Convert to fraction form
    417,900.24/626,940.36 = 129,705.89/x
  3. Step 3: Cross multiply
    417,900.24x = 626,940.36 × 129,705.89
  4. Step 4: Simplify right side
    417,900.24x = 81,317,854,236.02
  5. Step 5: Solve for x
    x = 81,317,854,236.02/417,900.24
  6. Step 6: Final answer
    x = 194,586.76

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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.