Home / 261,943.12-392,911.80-156,791.44

Finding the Fourth Proportional to 261,943.12, 392,911.80 and 156,791.44

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Solution

The fourth proportional to 261,943.12, 392,911.80 and 156,791.44 is: 235,185.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,943.12 : 392,911.80 = 156,791.44 : x
  2. Step 2: Convert to fraction form
    261,943.12/392,911.80 = 156,791.44/x
  3. Step 3: Cross multiply
    261,943.12x = 392,911.80 × 156,791.44
  4. Step 4: Simplify right side
    261,943.12x = 61,605,206,914.99
  5. Step 5: Solve for x
    x = 61,605,206,914.99/261,943.12
  6. Step 6: Final answer
    x = 235,185.44

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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.