Home / 347,790.20-521,709.60-137,400.80

Finding the Fourth Proportional to 347,790.20, 521,709.60 and 137,400.80

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Solution

The fourth proportional to 347,790.20, 521,709.60 and 137,400.80 is: 206,110.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,790.20 : 521,709.60 = 137,400.80 : x
  2. Step 2: Convert to fraction form
    347,790.20/521,709.60 = 137,400.80/x
  3. Step 3: Cross multiply
    347,790.20x = 521,709.60 × 137,400.80
  4. Step 4: Simplify right side
    347,790.20x = 71,683,316,407.68
  5. Step 5: Solve for x
    x = 71,683,316,407.68/347,790.20
  6. Step 6: Final answer
    x = 206,110.80

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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.