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Finding the Fourth Proportional to 252,750.78, 379,271.84 and 140,421.51

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Solution

The fourth proportional to 252,750.78, 379,271.84 and 140,421.51 is: 210,713.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,750.78 : 379,271.84 = 140,421.51 : x
  2. Step 2: Convert to fraction form
    252,750.78/379,271.84 = 140,421.51/x
  3. Step 3: Cross multiply
    252,750.78x = 379,271.84 × 140,421.51
  4. Step 4: Simplify right side
    252,750.78x = 53,257,923,771.17
  5. Step 5: Solve for x
    x = 53,257,923,771.17/252,750.78
  6. Step 6: Final answer
    x = 210,713.19

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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.