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Finding the Fourth Proportional to 266,015.48, 399,023.69 and 213,044.38

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Solution

The fourth proportional to 266,015.48, 399,023.69 and 213,044.38 is: 319,566.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,015.48 : 399,023.69 = 213,044.38 : x
  2. Step 2: Convert to fraction form
    266,015.48/399,023.69 = 213,044.38/x
  3. Step 3: Cross multiply
    266,015.48x = 399,023.69 × 213,044.38
  4. Step 4: Simplify right side
    266,015.48x = 85,009,752,578.58
  5. Step 5: Solve for x
    x = 85,009,752,578.58/266,015.48
  6. Step 6: Final answer
    x = 319,566.94

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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.