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Finding the Fourth Proportional to 245,419.80, 368,129.70 and 166,104.60

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Solution

The fourth proportional to 245,419.80, 368,129.70 and 166,104.60 is: 249,156.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,419.80 : 368,129.70 = 166,104.60 : x
  2. Step 2: Convert to fraction form
    245,419.80/368,129.70 = 166,104.60/x
  3. Step 3: Cross multiply
    245,419.80x = 368,129.70 × 166,104.60
  4. Step 4: Simplify right side
    245,419.80x = 61,148,036,566.62
  5. Step 5: Solve for x
    x = 61,148,036,566.62/245,419.80
  6. Step 6: Final answer
    x = 249,156.90

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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.