Home / 280,717.65-421,197.10-91,236.11

Finding the Fourth Proportional to 280,717.65, 421,197.10 and 91,236.11

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Solution

The fourth proportional to 280,717.65, 421,197.10 and 91,236.11 is: 136,893.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,717.65 : 421,197.10 = 91,236.11 : x
  2. Step 2: Convert to fraction form
    280,717.65/421,197.10 = 91,236.11/x
  3. Step 3: Cross multiply
    280,717.65x = 421,197.10 × 91,236.11
  4. Step 4: Simplify right side
    280,717.65x = 38,428,382,613.21
  5. Step 5: Solve for x
    x = 38,428,382,613.21/280,717.65
  6. Step 6: Final answer
    x = 136,893.36

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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.