Home / 439,979.80-659,969.70-107,555.80

Finding the Fourth Proportional to 439,979.80, 659,969.70 and 107,555.80

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Solution

The fourth proportional to 439,979.80, 659,969.70 and 107,555.80 is: 161,333.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,979.80 : 659,969.70 = 107,555.80 : x
  2. Step 2: Convert to fraction form
    439,979.80/659,969.70 = 107,555.80/x
  3. Step 3: Cross multiply
    439,979.80x = 659,969.70 × 107,555.80
  4. Step 4: Simplify right side
    439,979.80x = 70,983,569,059.26
  5. Step 5: Solve for x
    x = 70,983,569,059.26/439,979.80
  6. Step 6: Final answer
    x = 161,333.70

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1.5x scale

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.