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Finding the Fourth Proportional to 279,697.93, 385,993.07 and 158,835.85

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Solution

The fourth proportional to 279,697.93, 385,993.07 and 158,835.85 is: 219,199.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,697.93 : 385,993.07 = 158,835.85 : x
  2. Step 2: Convert to fraction form
    279,697.93/385,993.07 = 158,835.85/x
  3. Step 3: Cross multiply
    279,697.93x = 385,993.07 × 158,835.85
  4. Step 4: Simplify right side
    279,697.93x = 61,309,536,573.38
  5. Step 5: Solve for x
    x = 61,309,536,573.38/279,697.93
  6. Step 6: Final answer
    x = 219,199.11

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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.