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Finding the Fourth Proportional to 279,415.62, 385,602.05 and 197,889.93

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Solution

The fourth proportional to 279,415.62, 385,602.05 and 197,889.93 is: 273,094.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,415.62 : 385,602.05 = 197,889.93 : x
  2. Step 2: Convert to fraction form
    279,415.62/385,602.05 = 197,889.93/x
  3. Step 3: Cross multiply
    279,415.62x = 385,602.05 × 197,889.93
  4. Step 4: Simplify right side
    279,415.62x = 76,306,762,682.36
  5. Step 5: Solve for x
    x = 76,306,762,682.36/279,415.62
  6. Step 6: Final answer
    x = 273,094.12

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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.