Home / 347,795.20-521,717.10-137,405.80

Finding the Fourth Proportional to 347,795.20, 521,717.10 and 137,405.80

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Solution

The fourth proportional to 347,795.20, 521,717.10 and 137,405.80 is: 206,118.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,795.20 : 521,717.10 = 137,405.80 : x
  2. Step 2: Convert to fraction form
    347,795.20/521,717.10 = 137,405.80/x
  3. Step 3: Cross multiply
    347,795.20x = 521,717.10 × 137,405.80
  4. Step 4: Simplify right side
    347,795.20x = 71,686,955,499.18
  5. Step 5: Solve for x
    x = 71,686,955,499.18/347,795.20
  6. Step 6: Final answer
    x = 206,118.30

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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.