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Finding the Fourth Proportional to 490,158.61, 734,715.19 and 279,342.61

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Solution

The fourth proportional to 490,158.61, 734,715.19 and 279,342.61 is: 418,716.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,158.61 : 734,715.19 = 279,342.61 : x
  2. Step 2: Convert to fraction form
    490,158.61/734,715.19 = 279,342.61/x
  3. Step 3: Cross multiply
    490,158.61x = 734,715.19 × 279,342.61
  4. Step 4: Simplify right side
    490,158.61x = 205,237,257,293.64
  5. Step 5: Solve for x
    x = 205,237,257,293.64/490,158.61
  6. Step 6: Final answer
    x = 418,716.01

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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.