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Finding the Fourth Proportional to 279,057.68, 385,097.60 and 151,733.36

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Solution

The fourth proportional to 279,057.68, 385,097.60 and 151,733.36 is: 209,390.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,057.68 : 385,097.60 = 151,733.36 : x
  2. Step 2: Convert to fraction form
    279,057.68/385,097.60 = 151,733.36/x
  3. Step 3: Cross multiply
    279,057.68x = 385,097.60 × 151,733.36
  4. Step 4: Simplify right side
    279,057.68x = 58,432,152,775.94
  5. Step 5: Solve for x
    x = 58,432,152,775.94/279,057.68
  6. Step 6: Final answer
    x = 209,390.95

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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.