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Finding the Fourth Proportional to 261,889.88, 361,396.36 and 153,004.31

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Solution

The fourth proportional to 261,889.88, 361,396.36 and 153,004.31 is: 211,139.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,889.88 : 361,396.36 = 153,004.31 : x
  2. Step 2: Convert to fraction form
    261,889.88/361,396.36 = 153,004.31/x
  3. Step 3: Cross multiply
    261,889.88x = 361,396.36 × 153,004.31
  4. Step 4: Simplify right side
    261,889.88x = 55,295,200,437.82
  5. Step 5: Solve for x
    x = 55,295,200,437.82/261,889.88
  6. Step 6: Final answer
    x = 211,139.13

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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.