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Finding the Fourth Proportional to 243,006.78, 364,521.21 and 74,514.78

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Solution

The fourth proportional to 243,006.78, 364,521.21 and 74,514.78 is: 111,775.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,006.78 : 364,521.21 = 74,514.78 : x
  2. Step 2: Convert to fraction form
    243,006.78/364,521.21 = 74,514.78/x
  3. Step 3: Cross multiply
    243,006.78x = 364,521.21 × 74,514.78
  4. Step 4: Simplify right side
    243,006.78x = 27,162,217,768.48
  5. Step 5: Solve for x
    x = 27,162,217,768.48/243,006.78
  6. Step 6: Final answer
    x = 111,775.56

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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.