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Finding the Fourth Proportional to 279,972.93, 420,133.56 and 113,760.93

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Solution

The fourth proportional to 279,972.93, 420,133.56 and 113,760.93 is: 170,712.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,972.93 : 420,133.56 = 113,760.93 : x
  2. Step 2: Convert to fraction form
    279,972.93/420,133.56 = 113,760.93/x
  3. Step 3: Cross multiply
    279,972.93x = 420,133.56 × 113,760.93
  4. Step 4: Simplify right side
    279,972.93x = 47,794,784,509.81
  5. Step 5: Solve for x
    x = 47,794,784,509.81/279,972.93
  6. Step 6: Final answer
    x = 170,712.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.