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Finding the Fourth Proportional to 231,092.80, 346,639.20 and 154,985.20

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Solution

The fourth proportional to 231,092.80, 346,639.20 and 154,985.20 is: 232,477.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,092.80 : 346,639.20 = 154,985.20 : x
  2. Step 2: Convert to fraction form
    231,092.80/346,639.20 = 154,985.20/x
  3. Step 3: Cross multiply
    231,092.80x = 346,639.20 × 154,985.20
  4. Step 4: Simplify right side
    231,092.80x = 53,723,945,739.84
  5. Step 5: Solve for x
    x = 53,723,945,739.84/231,092.80
  6. Step 6: Final answer
    x = 232,477.80

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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.