Home / 261,243.07-391,975.56-142,776.01

Finding the Fourth Proportional to 261,243.07, 391,975.56 and 142,776.01

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Solution

The fourth proportional to 261,243.07, 391,975.56 and 142,776.01 is: 214,224.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,243.07 : 391,975.56 = 142,776.01 : x
  2. Step 2: Convert to fraction form
    261,243.07/391,975.56 = 142,776.01/x
  3. Step 3: Cross multiply
    261,243.07x = 391,975.56 × 142,776.01
  4. Step 4: Simplify right side
    261,243.07x = 55,964,705,760.44
  5. Step 5: Solve for x
    x = 55,964,705,760.44/261,243.07
  6. Step 6: Final answer
    x = 214,224.66

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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.