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Finding the Fourth Proportional to 343,449.90, 514,811.25 and 115,528.54

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Solution

The fourth proportional to 343,449.90, 514,811.25 and 115,528.54 is: 173,170.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,449.90 : 514,811.25 = 115,528.54 : x
  2. Step 2: Convert to fraction form
    343,449.90/514,811.25 = 115,528.54/x
  3. Step 3: Cross multiply
    343,449.90x = 514,811.25 × 115,528.54
  4. Step 4: Simplify right side
    343,449.90x = 59,475,392,088.08
  5. Step 5: Solve for x
    x = 59,475,392,088.08/343,449.90
  6. Step 6: Final answer
    x = 173,170.50

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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.