Home / 285,329.04-428,076.89-127,520.60

Finding the Fourth Proportional to 285,329.04, 428,076.89 and 127,520.60

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Solution

The fourth proportional to 285,329.04, 428,076.89 and 127,520.60 is: 191,318.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,329.04 : 428,076.89 = 127,520.60 : x
  2. Step 2: Convert to fraction form
    285,329.04/428,076.89 = 127,520.60/x
  3. Step 3: Cross multiply
    285,329.04x = 428,076.89 × 127,520.60
  4. Step 4: Simplify right side
    285,329.04x = 54,588,619,080.95
  5. Step 5: Solve for x
    x = 54,588,619,080.95/285,329.04
  6. Step 6: Final answer
    x = 191,318.13

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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.