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Finding the Fourth Proportional to 279,750.99, 386,059.20 and 152,428.71

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Solution

The fourth proportional to 279,750.99, 386,059.20 and 152,428.71 is: 210,353.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,750.99 : 386,059.20 = 152,428.71 : x
  2. Step 2: Convert to fraction form
    279,750.99/386,059.20 = 152,428.71/x
  3. Step 3: Cross multiply
    279,750.99x = 386,059.20 × 152,428.71
  4. Step 4: Simplify right side
    279,750.99x = 58,846,505,839.63
  5. Step 5: Solve for x
    x = 58,846,505,839.63/279,750.99
  6. Step 6: Final answer
    x = 210,353.16

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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.