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Finding the Fourth Proportional to 279,770.99, 386,071.89 and 158,911.91

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Solution

The fourth proportional to 279,770.99, 386,071.89 and 158,911.91 is: 219,291.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,770.99 : 386,071.89 = 158,911.91 : x
  2. Step 2: Convert to fraction form
    279,770.99/386,071.89 = 158,911.91/x
  3. Step 3: Cross multiply
    279,770.99x = 386,071.89 × 158,911.91
  4. Step 4: Simplify right side
    279,770.99x = 61,351,421,437.21
  5. Step 5: Solve for x
    x = 61,351,421,437.21/279,770.99
  6. Step 6: Final answer
    x = 219,291.58

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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.