Home / 439,318.47-658,043.28-259,209.80

Finding the Fourth Proportional to 439,318.47, 658,043.28 and 259,209.80

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Solution

The fourth proportional to 439,318.47, 658,043.28 and 259,209.80 is: 388,263.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,318.47 : 658,043.28 = 259,209.80 : x
  2. Step 2: Convert to fraction form
    439,318.47/658,043.28 = 259,209.80/x
  3. Step 3: Cross multiply
    439,318.47x = 658,043.28 × 259,209.80
  4. Step 4: Simplify right side
    439,318.47x = 170,571,267,000.14
  5. Step 5: Solve for x
    x = 170,571,267,000.14/439,318.47
  6. Step 6: Final answer
    x = 388,263.36

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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.