Home / 261,312.21-391,874.25-90,487.67

Finding the Fourth Proportional to 261,312.21, 391,874.25 and 90,487.67

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Solution

The fourth proportional to 261,312.21, 391,874.25 and 90,487.67 is: 135,698.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,312.21 : 391,874.25 = 90,487.67 : x
  2. Step 2: Convert to fraction form
    261,312.21/391,874.25 = 90,487.67/x
  3. Step 3: Cross multiply
    261,312.21x = 391,874.25 × 90,487.67
  4. Step 4: Simplify right side
    261,312.21x = 35,459,786,195.46
  5. Step 5: Solve for x
    x = 35,459,786,195.46/261,312.21
  6. Step 6: Final answer
    x = 135,698.93

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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.