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Finding the Fourth Proportional to 399,660.80, 599,404.80 and 175,020.80

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Solution

The fourth proportional to 399,660.80, 599,404.80 and 175,020.80 is: 262,493.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,660.80 : 599,404.80 = 175,020.80 : x
  2. Step 2: Convert to fraction form
    399,660.80/599,404.80 = 175,020.80/x
  3. Step 3: Cross multiply
    399,660.80x = 599,404.80 × 175,020.80
  4. Step 4: Simplify right side
    399,660.80x = 104,908,307,619.84
  5. Step 5: Solve for x
    x = 104,908,307,619.84/399,660.80
  6. Step 6: Final answer
    x = 262,493.36

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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.