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Finding the Fourth Proportional to 518,514.77, 777,886.33 and 158,688.38

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Solution

The fourth proportional to 518,514.77, 777,886.33 and 158,688.38 is: 238,067.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,514.77 : 777,886.33 = 158,688.38 : x
  2. Step 2: Convert to fraction form
    518,514.77/777,886.33 = 158,688.38/x
  3. Step 3: Cross multiply
    518,514.77x = 777,886.33 × 158,688.38
  4. Step 4: Simplify right side
    518,514.77x = 123,441,520,738.40
  5. Step 5: Solve for x
    x = 123,441,520,738.40/518,514.77
  6. Step 6: Final answer
    x = 238,067.51

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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.