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Finding the Fourth Proportional to 369,234.69, 553,856.43 and 102,979.01

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Solution

The fourth proportional to 369,234.69, 553,856.43 and 102,979.01 is: 154,469.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,234.69 : 553,856.43 = 102,979.01 : x
  2. Step 2: Convert to fraction form
    369,234.69/553,856.43 = 102,979.01/x
  3. Step 3: Cross multiply
    369,234.69x = 553,856.43 × 102,979.01
  4. Step 4: Simplify right side
    369,234.69x = 57,035,584,074.25
  5. Step 5: Solve for x
    x = 57,035,584,074.25/369,234.69
  6. Step 6: Final answer
    x = 154,469.73

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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.