Home / 399,301.26-598,949.46-99,780.30

Finding the Fourth Proportional to 399,301.26, 598,949.46 and 99,780.30

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Solution

The fourth proportional to 399,301.26, 598,949.46 and 99,780.30 is: 149,669.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,301.26 : 598,949.46 = 99,780.30 : x
  2. Step 2: Convert to fraction form
    399,301.26/598,949.46 = 99,780.30/x
  3. Step 3: Cross multiply
    399,301.26x = 598,949.46 × 99,780.30
  4. Step 4: Simplify right side
    399,301.26x = 59,763,356,803.64
  5. Step 5: Solve for x
    x = 59,763,356,803.64/399,301.26
  6. Step 6: Final answer
    x = 149,669.84

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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.