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Finding the Fourth Proportional to 279,013.32, 418,631.76 and 101,532.60

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Solution

The fourth proportional to 279,013.32, 418,631.76 and 101,532.60 is: 152,339.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,013.32 : 418,631.76 = 101,532.60 : x
  2. Step 2: Convert to fraction form
    279,013.32/418,631.76 = 101,532.60/x
  3. Step 3: Cross multiply
    279,013.32x = 418,631.76 × 101,532.60
  4. Step 4: Simplify right side
    279,013.32x = 42,504,771,035.38
  5. Step 5: Solve for x
    x = 42,504,771,035.38/279,013.32
  6. Step 6: Final answer
    x = 152,339.58

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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.