Home / 268,869.28-402,690.48-128,727.04

Finding the Fourth Proportional to 268,869.28, 402,690.48 and 128,727.04

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Solution

The fourth proportional to 268,869.28, 402,690.48 and 128,727.04 is: 192,796.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,869.28 : 402,690.48 = 128,727.04 : x
  2. Step 2: Convert to fraction form
    268,869.28/402,690.48 = 128,727.04/x
  3. Step 3: Cross multiply
    268,869.28x = 402,690.48 × 128,727.04
  4. Step 4: Simplify right side
    268,869.28x = 51,837,153,526.58
  5. Step 5: Solve for x
    x = 51,837,153,526.58/268,869.28
  6. Step 6: Final answer
    x = 192,796.86

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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.