Home / 499,021.22-688,649.18-272,666.72

Finding the Fourth Proportional to 499,021.22, 688,649.18 and 272,666.72

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Solution

The fourth proportional to 499,021.22, 688,649.18 and 272,666.72 is: 376,280.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,021.22 : 688,649.18 = 272,666.72 : x
  2. Step 2: Convert to fraction form
    499,021.22/688,649.18 = 272,666.72/x
  3. Step 3: Cross multiply
    499,021.22x = 688,649.18 × 272,666.72
  4. Step 4: Simplify right side
    499,021.22x = 187,771,713,499.58
  5. Step 5: Solve for x
    x = 187,771,713,499.58/499,021.22
  6. Step 6: Final answer
    x = 376,280.02

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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.