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Finding the Fourth Proportional to 166,419.80, 249,629.70 and 163,309.40

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Solution

The fourth proportional to 166,419.80, 249,629.70 and 163,309.40 is: 244,964.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,419.80 : 249,629.70 = 163,309.40 : x
  2. Step 2: Convert to fraction form
    166,419.80/249,629.70 = 163,309.40/x
  3. Step 3: Cross multiply
    166,419.80x = 249,629.70 × 163,309.40
  4. Step 4: Simplify right side
    166,419.80x = 40,766,876,529.18
  5. Step 5: Solve for x
    x = 40,766,876,529.18/166,419.80
  6. Step 6: Final answer
    x = 244,964.10

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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.