Home / 457,245.20-685,867.80-207,927.20

Finding the Fourth Proportional to 457,245.20, 685,867.80 and 207,927.20

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Solution

The fourth proportional to 457,245.20, 685,867.80 and 207,927.20 is: 311,890.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,245.20 : 685,867.80 = 207,927.20 : x
  2. Step 2: Convert to fraction form
    457,245.20/685,867.80 = 207,927.20/x
  3. Step 3: Cross multiply
    457,245.20x = 685,867.80 × 207,927.20
  4. Step 4: Simplify right side
    457,245.20x = 142,610,571,224.16
  5. Step 5: Solve for x
    x = 142,610,571,224.16/457,245.20
  6. Step 6: Final answer
    x = 311,890.80

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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.