Home / 261,890.20-361,390.80-154,455.04

Finding the Fourth Proportional to 261,890.20, 361,390.80 and 154,455.04

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Solution

The fourth proportional to 261,890.20, 361,390.80 and 154,455.04 is: 213,137.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,890.20 : 361,390.80 = 154,455.04 : x
  2. Step 2: Convert to fraction form
    261,890.20/361,390.80 = 154,455.04/x
  3. Step 3: Cross multiply
    261,890.20x = 361,390.80 × 154,455.04
  4. Step 4: Simplify right side
    261,890.20x = 55,818,630,469.63
  5. Step 5: Solve for x
    x = 55,818,630,469.63/261,890.20
  6. Step 6: Final answer
    x = 213,137.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.