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Finding the Fourth Proportional to 318,226.98, 439,044 and 197,324.76

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Solution

The fourth proportional to 318,226.98, 439,044 and 197,324.76 is: 272,240.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,226.98 : 439,044 = 197,324.76 : x
  2. Step 2: Convert to fraction form
    318,226.98/439,044 = 197,324.76/x
  3. Step 3: Cross multiply
    318,226.98x = 439,044 × 197,324.76
  4. Step 4: Simplify right side
    318,226.98x = 86,634,251,929.44
  5. Step 5: Solve for x
    x = 86,634,251,929.44/318,226.98
  6. Step 6: Final answer
    x = 272,240.44

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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.