Home / 209,327.13-288,936.21-155,684.81

Finding the Fourth Proportional to 209,327.13, 288,936.21 and 155,684.81

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Solution

The fourth proportional to 209,327.13, 288,936.21 and 155,684.81 is: 214,893.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,327.13 : 288,936.21 = 155,684.81 : x
  2. Step 2: Convert to fraction form
    209,327.13/288,936.21 = 155,684.81/x
  3. Step 3: Cross multiply
    209,327.13x = 288,936.21 × 155,684.81
  4. Step 4: Simplify right side
    209,327.13x = 44,982,977,511.29
  5. Step 5: Solve for x
    x = 44,982,977,511.29/209,327.13
  6. Step 6: Final answer
    x = 214,893.20

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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.