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Finding the Fourth Proportional to 279,602.16, 385,861.89 and 158,754.69

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Solution

The fourth proportional to 279,602.16, 385,861.89 and 158,754.69 is: 219,087.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,602.16 : 385,861.89 = 158,754.69 : x
  2. Step 2: Convert to fraction form
    279,602.16/385,861.89 = 158,754.69/x
  3. Step 3: Cross multiply
    279,602.16x = 385,861.89 × 158,754.69
  4. Step 4: Simplify right side
    279,602.16x = 61,257,384,729.76
  5. Step 5: Solve for x
    x = 61,257,384,729.76/279,602.16
  6. Step 6: Final answer
    x = 219,087.67

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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.