Home / 499,215.88-688,918.26-272,861.38

Finding the Fourth Proportional to 499,215.88, 688,918.26 and 272,861.38

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Solution

The fourth proportional to 499,215.88, 688,918.26 and 272,861.38 is: 376,548.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,215.88 : 688,918.26 = 272,861.38 : x
  2. Step 2: Convert to fraction form
    499,215.88/688,918.26 = 272,861.38/x
  3. Step 3: Cross multiply
    499,215.88x = 688,918.26 × 272,861.38
  4. Step 4: Simplify right side
    499,215.88x = 187,979,187,130.80
  5. Step 5: Solve for x
    x = 187,979,187,130.80/499,215.88
  6. Step 6: Final answer
    x = 376,548.89

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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.