Home / 268,804.02-402,941.68-128,529.84

Finding the Fourth Proportional to 268,804.02, 402,941.68 and 128,529.84

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Solution

The fourth proportional to 268,804.02, 402,941.68 and 128,529.84 is: 192,668.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,804.02 : 402,941.68 = 128,529.84 : x
  2. Step 2: Convert to fraction form
    268,804.02/402,941.68 = 128,529.84/x
  3. Step 3: Cross multiply
    268,804.02x = 402,941.68 × 128,529.84
  4. Step 4: Simplify right side
    268,804.02x = 51,790,029,659.73
  5. Step 5: Solve for x
    x = 51,790,029,659.73/268,804.02
  6. Step 6: Final answer
    x = 192,668.36

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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.