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Finding the Fourth Proportional to 279,351.69, 385,514.08 and 158,498.07

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Solution

The fourth proportional to 279,351.69, 385,514.08 and 158,498.07 is: 218,732.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,351.69 : 385,514.08 = 158,498.07 : x
  2. Step 2: Convert to fraction form
    279,351.69/385,514.08 = 158,498.07/x
  3. Step 3: Cross multiply
    279,351.69x = 385,514.08 × 158,498.07
  4. Step 4: Simplify right side
    279,351.69x = 61,103,237,241.58
  5. Step 5: Solve for x
    x = 61,103,237,241.58/279,351.69
  6. Step 6: Final answer
    x = 218,732.30

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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.