Home / 261,131.20-391,826.40-148,897.60

Finding the Fourth Proportional to 261,131.20, 391,826.40 and 148,897.60

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Solution

The fourth proportional to 261,131.20, 391,826.40 and 148,897.60 is: 223,420.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,131.20 : 391,826.40 = 148,897.60 : x
  2. Step 2: Convert to fraction form
    261,131.20/391,826.40 = 148,897.60/x
  3. Step 3: Cross multiply
    261,131.20x = 391,826.40 × 148,897.60
  4. Step 4: Simplify right side
    261,131.20x = 58,342,010,576.64
  5. Step 5: Solve for x
    x = 58,342,010,576.64/261,131.20
  6. Step 6: Final answer
    x = 223,420.30

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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.