Home / 499,016.70-688,643.01-272,662.20

Finding the Fourth Proportional to 499,016.70, 688,643.01 and 272,662.20

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Solution

The fourth proportional to 499,016.70, 688,643.01 and 272,662.20 is: 376,273.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,016.70 : 688,643.01 = 272,662.20 : x
  2. Step 2: Convert to fraction form
    499,016.70/688,643.01 = 272,662.20/x
  3. Step 3: Cross multiply
    499,016.70x = 688,643.01 × 272,662.20
  4. Step 4: Simplify right side
    499,016.70x = 187,766,918,121.22
  5. Step 5: Solve for x
    x = 187,766,918,121.22/499,016.70
  6. Step 6: Final answer
    x = 376,273.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.