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Finding the Fourth Proportional to 461,721.80, 692,604.30 and 146,203.40

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Solution

The fourth proportional to 461,721.80, 692,604.30 and 146,203.40 is: 219,311.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,721.80 : 692,604.30 = 146,203.40 : x
  2. Step 2: Convert to fraction form
    461,721.80/692,604.30 = 146,203.40/x
  3. Step 3: Cross multiply
    461,721.80x = 692,604.30 × 146,203.40
  4. Step 4: Simplify right side
    461,721.80x = 101,261,103,514.62
  5. Step 5: Solve for x
    x = 101,261,103,514.62/461,721.80
  6. Step 6: Final answer
    x = 219,311.94

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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.