Home / 268,789.28-370,929.12-155,609.60

Finding the Fourth Proportional to 268,789.28, 370,929.12 and 155,609.60

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Solution

The fourth proportional to 268,789.28, 370,929.12 and 155,609.60 is: 214,741.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,789.28 : 370,929.12 = 155,609.60 : x
  2. Step 2: Convert to fraction form
    268,789.28/370,929.12 = 155,609.60/x
  3. Step 3: Cross multiply
    268,789.28x = 370,929.12 × 155,609.60
  4. Step 4: Simplify right side
    268,789.28x = 57,720,131,991.55
  5. Step 5: Solve for x
    x = 57,720,131,991.55/268,789.28
  6. Step 6: Final answer
    x = 214,741.20

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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.