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Finding the Fourth Proportional to 340,520.74, 469,914.34 and 187,555.88

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Solution

The fourth proportional to 340,520.74, 469,914.34 and 187,555.88 is: 258,824.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,520.74 : 469,914.34 = 187,555.88 : x
  2. Step 2: Convert to fraction form
    340,520.74/469,914.34 = 187,555.88/x
  3. Step 3: Cross multiply
    340,520.74x = 469,914.34 × 187,555.88
  4. Step 4: Simplify right side
    340,520.74x = 88,135,197,563.32
  5. Step 5: Solve for x
    x = 88,135,197,563.32/340,520.74
  6. Step 6: Final answer
    x = 258,824.76

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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.