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Finding the Fourth Proportional to 343,607.40, 515,265.30 and 166,168.80

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Solution

The fourth proportional to 343,607.40, 515,265.30 and 166,168.80 is: 249,182.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,607.40 : 515,265.30 = 166,168.80 : x
  2. Step 2: Convert to fraction form
    343,607.40/515,265.30 = 166,168.80/x
  3. Step 3: Cross multiply
    343,607.40x = 515,265.30 × 166,168.80
  4. Step 4: Simplify right side
    343,607.40x = 85,621,016,582.64
  5. Step 5: Solve for x
    x = 85,621,016,582.64/343,607.40
  6. Step 6: Final answer
    x = 249,182.69

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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.