Home / 285,974.46-428,964.73-86,296.60

Finding the Fourth Proportional to 285,974.46, 428,964.73 and 86,296.60

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Solution

The fourth proportional to 285,974.46, 428,964.73 and 86,296.60 is: 129,445.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,974.46 : 428,964.73 = 86,296.60 : x
  2. Step 2: Convert to fraction form
    285,974.46/428,964.73 = 86,296.60/x
  3. Step 3: Cross multiply
    285,974.46x = 428,964.73 × 86,296.60
  4. Step 4: Simplify right side
    285,974.46x = 37,018,197,718.92
  5. Step 5: Solve for x
    x = 37,018,197,718.92/285,974.46
  6. Step 6: Final answer
    x = 129,445.82

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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.