Home / 285,976.02-428,953.22-86,291.08

Finding the Fourth Proportional to 285,976.02, 428,953.22 and 86,291.08

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Solution

The fourth proportional to 285,976.02, 428,953.22 and 86,291.08 is: 129,433.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,976.02 : 428,953.22 = 86,291.08 : x
  2. Step 2: Convert to fraction form
    285,976.02/428,953.22 = 86,291.08/x
  3. Step 3: Cross multiply
    285,976.02x = 428,953.22 × 86,291.08
  4. Step 4: Simplify right side
    285,976.02x = 37,014,836,623.28
  5. Step 5: Solve for x
    x = 37,014,836,623.28/285,976.02
  6. Step 6: Final answer
    x = 129,433.36

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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.