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Finding the Fourth Proportional to 279,596.87, 385,854.60 and 158,749.41

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Solution

The fourth proportional to 279,596.87, 385,854.60 and 158,749.41 is: 219,080.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,596.87 : 385,854.60 = 158,749.41 : x
  2. Step 2: Convert to fraction form
    279,596.87/385,854.60 = 158,749.41/x
  3. Step 3: Cross multiply
    279,596.87x = 385,854.60 × 158,749.41
  4. Step 4: Simplify right side
    279,596.87x = 61,254,190,095.79
  5. Step 5: Solve for x
    x = 61,254,190,095.79/279,596.87
  6. Step 6: Final answer
    x = 219,080.39

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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.