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Finding the Fourth Proportional to 279,087.72, 418,631.76 and 229,639.92

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Solution

The fourth proportional to 279,087.72, 418,631.76 and 229,639.92 is: 344,460.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,087.72 : 418,631.76 = 229,639.92 : x
  2. Step 2: Convert to fraction form
    279,087.72/418,631.76 = 229,639.92/x
  3. Step 3: Cross multiply
    279,087.72x = 418,631.76 × 229,639.92
  4. Step 4: Simplify right side
    279,087.72x = 96,134,563,875.86
  5. Step 5: Solve for x
    x = 96,134,563,875.86/279,087.72
  6. Step 6: Final answer
    x = 344,460.03

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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.