Home / 261,040.60-391,415.10-111,255.40

Finding the Fourth Proportional to 261,040.60, 391,415.10 and 111,255.40

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Solution

The fourth proportional to 261,040.60, 391,415.10 and 111,255.40 is: 166,820.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,040.60 : 391,415.10 = 111,255.40 : x
  2. Step 2: Convert to fraction form
    261,040.60/391,415.10 = 111,255.40/x
  3. Step 3: Cross multiply
    261,040.60x = 391,415.10 × 111,255.40
  4. Step 4: Simplify right side
    261,040.60x = 43,547,043,516.54
  5. Step 5: Solve for x
    x = 43,547,043,516.54/261,040.60
  6. Step 6: Final answer
    x = 166,820.96

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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.