Home / 391,487.45-540,227.09-230,311.35

Finding the Fourth Proportional to 391,487.45, 540,227.09 and 230,311.35

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Solution

The fourth proportional to 391,487.45, 540,227.09 and 230,311.35 is: 317,814.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,487.45 : 540,227.09 = 230,311.35 : x
  2. Step 2: Convert to fraction form
    391,487.45/540,227.09 = 230,311.35/x
  3. Step 3: Cross multiply
    391,487.45x = 540,227.09 × 230,311.35
  4. Step 4: Simplify right side
    391,487.45x = 124,420,430,980.25
  5. Step 5: Solve for x
    x = 124,420,430,980.25/391,487.45
  6. Step 6: Final answer
    x = 317,814.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.