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Finding the Fourth Proportional to 343,763.82, 515,659.68 and 163,756.68

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Solution

The fourth proportional to 343,763.82, 515,659.68 and 163,756.68 is: 245,641.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,763.82 : 515,659.68 = 163,756.68 : x
  2. Step 2: Convert to fraction form
    343,763.82/515,659.68 = 163,756.68/x
  3. Step 3: Cross multiply
    343,763.82x = 515,659.68 × 163,756.68
  4. Step 4: Simplify right side
    343,763.82x = 84,442,717,206.66
  5. Step 5: Solve for x
    x = 84,442,717,206.66/343,763.82
  6. Step 6: Final answer
    x = 245,641.67

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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.