Home / 209,189.80-313,609.02-145,823.68

Finding the Fourth Proportional to 209,189.80, 313,609.02 and 145,823.68

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Solution

The fourth proportional to 209,189.80, 313,609.02 and 145,823.68 is: 218,613.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,189.80 : 313,609.02 = 145,823.68 : x
  2. Step 2: Convert to fraction form
    209,189.80/313,609.02 = 145,823.68/x
  3. Step 3: Cross multiply
    209,189.80x = 313,609.02 × 145,823.68
  4. Step 4: Simplify right side
    209,189.80x = 45,731,621,377.59
  5. Step 5: Solve for x
    x = 45,731,621,377.59/209,189.80
  6. Step 6: Final answer
    x = 218,613.06

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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.