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Finding the Fourth Proportional to 324,358.89, 486,537.13 and 87,701.50

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Solution

The fourth proportional to 324,358.89, 486,537.13 and 87,701.50 is: 131,551.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,358.89 : 486,537.13 = 87,701.50 : x
  2. Step 2: Convert to fraction form
    324,358.89/486,537.13 = 87,701.50/x
  3. Step 3: Cross multiply
    324,358.89x = 486,537.13 × 87,701.50
  4. Step 4: Simplify right side
    324,358.89x = 42,670,036,106.70
  5. Step 5: Solve for x
    x = 42,670,036,106.70/324,358.89
  6. Step 6: Final answer
    x = 131,551.92

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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.