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Finding the Fourth Proportional to 306,708.84, 423,321.12 and 179,415.72

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Solution

The fourth proportional to 306,708.84, 423,321.12 and 179,415.72 is: 247,630.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,708.84 : 423,321.12 = 179,415.72 : x
  2. Step 2: Convert to fraction form
    306,708.84/423,321.12 = 179,415.72/x
  3. Step 3: Cross multiply
    306,708.84x = 423,321.12 × 179,415.72
  4. Step 4: Simplify right side
    306,708.84x = 75,950,463,536.01
  5. Step 5: Solve for x
    x = 75,950,463,536.01/306,708.84
  6. Step 6: Final answer
    x = 247,630.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.